From 06a324a25c2b72bf388732cfe39b72d8d1798f55 Mon Sep 17 00:00:00 2001 From: KEN Date: Tue, 19 Aug 2025 22:03:15 +0800 Subject: [PATCH 1/3] =?UTF-8?q?=E9=80=82=E9=85=8D=E4=BA=86VSCode=E5=BC=80?= =?UTF-8?q?=E5=8F=91=E7=8E=AF=E5=A2=83=E7=9A=84=E7=89=88=E6=9C=AC?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .vscode/launch.json | 34 + .vscode/settings.json | 5 + admin/.env.development | 2 +- .../com/zbkj/admin/CrmebAdminApplication.java | 24 +- .../zbkj/admin/quartz/ScheduleManager.java | 13 +- .../src/main/resources/application-dev.yml | 10 +- .../src/main/resources/application.yml | 61 +- crmeb/crmeb-common/pom.xml | 40 +- .../interceptor/SwaggerInterceptor.java | 5 +- .../java/com/zbkj/common/utils/CrmebUtil.java | 2 + crmeb/pom.xml | 13 +- crmeb_admin_log/log_debug.log | 7610 ++ crmeb_admin_log/log_error.log | 102369 +++++++++++++++ crmeb_admin_log/log_info.log | 0 crmeb_admin_log/log_warn.log | 0 15 files changed, 110139 insertions(+), 49 deletions(-) create mode 100644 .vscode/launch.json create mode 100644 .vscode/settings.json create mode 100644 crmeb_admin_log/log_debug.log create mode 100644 crmeb_admin_log/log_error.log create mode 100644 crmeb_admin_log/log_info.log create mode 100644 crmeb_admin_log/log_warn.log diff --git a/.vscode/launch.json b/.vscode/launch.json new file mode 100644 index 00000000..0d46b1d5 --- /dev/null +++ b/.vscode/launch.json @@ -0,0 +1,34 @@ +{ + "configurations": [ + { + "type": "java", + "name": "Spring Boot-CrmebAdminApplication", + "request": "launch", + "cwd": "${workspaceFolder}", + "mainClass": "com.zbkj.admin.CrmebAdminApplication", + "projectName": "crmeb-admin", + "args": "", + "envFile": "${workspaceFolder}/.env" + }, + { + "type": "java", + "name": "Spring Boot-YlyUtil", + "request": "launch", + "cwd": "${workspaceFolder}", + "mainClass": "com.zbkj.service.util.YlyUtil", + "projectName": "crmeb-service", + "args": "", + "envFile": "${workspaceFolder}/.env" + }, + { + "type": "java", + "name": "Spring Boot-CrmebFrontApplication", + "request": "launch", + "cwd": "${workspaceFolder}", + "mainClass": "com.zbkj.front.CrmebFrontApplication", + "projectName": "crmeb-front", + "args": "", + "envFile": "${workspaceFolder}/.env" + } + ] +} \ No newline at end of file diff --git a/.vscode/settings.json b/.vscode/settings.json new file mode 100644 index 00000000..dcafc047 --- /dev/null +++ b/.vscode/settings.json @@ -0,0 +1,5 @@ +{ + "java.configuration.updateBuildConfiguration": "interactive", + "java.debug.settings.onBuildFailureProceed": true, + "java.compile.nullAnalysis.mode": "automatic" +} \ No newline at end of file diff --git a/admin/.env.development b/admin/.env.development index 90b992d4..a83c6ba0 100644 --- a/admin/.env.development +++ b/admin/.env.development @@ -4,7 +4,7 @@ ENV = 'development' # base api # VUE_APP_BASE_API = '/dev-api' # VUE_APP_BASE_API = 'https://api.java.crmeb.net' -VUE_APP_BASE_API = 'http://192.168.31.35:2500' +VUE_APP_BASE_API = 'http://127.0.0.1:20500' # vue-cli uses the VUE_CLI_BABEL_TRANSPILE_MODULES environment variable, # to control whether the babel-plugin-dynamic-import-node plugin is enabled. diff --git a/crmeb/crmeb-admin/src/main/java/com/zbkj/admin/CrmebAdminApplication.java b/crmeb/crmeb-admin/src/main/java/com/zbkj/admin/CrmebAdminApplication.java index 969f00d2..b5eb23d8 100644 --- a/crmeb/crmeb-admin/src/main/java/com/zbkj/admin/CrmebAdminApplication.java +++ b/crmeb/crmeb-admin/src/main/java/com/zbkj/admin/CrmebAdminApplication.java @@ -26,13 +26,23 @@ @EnableSwagger2 @Configuration @EnableTransactionManagement -@SpringBootApplication(exclude = DataSourceAutoConfiguration.class) //去掉数据源 -//@ComponentScan(basePackages={"com.utils", -// "com.zbkj.crmeb", -// "com.exception", -// "com.common", -// "com.aop"}) //扫描utils包和父包 -//@MapperScan(basePackages = {"com.zbkj.crmeb.*.dao", "com.zbkj.crmeb.*.*.dao"}) +@SpringBootApplication( + exclude = DataSourceAutoConfiguration.class + , scanBasePackages={ + "com.zbkj.common.*", + "com.zbkj.common.utils.*" + } +) //去掉数据源 +@ComponentScan({ + "com.utils", + "com.zbkj.crmeb", + "com.exception", + "com.common", + "com.aop", + "com.zbkj.common", + "com.zbkj.common.utils" +}) //扫描utils包和父包 +@MapperScan(basePackages = {"com.zbkj.crmeb.*.dao", "com.zbkj.crmeb.*.*.dao"}) @ComponentScan(basePackages = {"com.zbkj"}) @MapperScan(basePackages = {"com.zbkj.**.dao"}) public class CrmebAdminApplication { diff --git a/crmeb/crmeb-admin/src/main/java/com/zbkj/admin/quartz/ScheduleManager.java b/crmeb/crmeb-admin/src/main/java/com/zbkj/admin/quartz/ScheduleManager.java index 19cb9185..cf4fc184 100644 --- a/crmeb/crmeb-admin/src/main/java/com/zbkj/admin/quartz/ScheduleManager.java +++ b/crmeb/crmeb-admin/src/main/java/com/zbkj/admin/quartz/ScheduleManager.java @@ -50,14 +50,19 @@ public CronTrigger getCronTrigger(ScheduleJob scheduleJob) { public void createScheduleJob(ScheduleJob scheduleJob) { try { //构建job信息 - JobDetail jobDetail = JobBuilder.newJob(QuartzJob.class).withIdentity(getJobKey(scheduleJob)).build(); + JobDetail jobDetail = JobBuilder.newJob(QuartzJob.class).withIdentity( + getJobKey(scheduleJob) + ).build(); //表达式调度构建器，可以根据scheduleJob修改withMisfireHandling方法，但是使用异步执行定时任务，没必要 - CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(scheduleJob.getCronExpression()) - .withMisfireHandlingInstructionFireAndProceed(); + CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule( + scheduleJob.getCronExpression() + ).withMisfireHandlingInstructionFireAndProceed(); //按新的cronExpression表达式构建一个新的trigger - CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(getTriggerKey(scheduleJob)).withSchedule(scheduleBuilder).build(); + CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity( + getTriggerKey(scheduleJob) + ).withSchedule(scheduleBuilder).build(); //放入参数，运行时的方法可以获取 jobDetail.getJobDataMap().put(QuartzJob.JOB_PARAM_KEY, scheduleJob); diff --git a/crmeb/crmeb-admin/src/main/resources/application-dev.yml b/crmeb/crmeb-admin/src/main/resources/application-dev.yml index 64bfb3ef..f84dc31d 100644 --- a/crmeb/crmeb-admin/src/main/resources/application-dev.yml +++ b/crmeb/crmeb-admin/src/main/resources/application-dev.yml @@ -26,13 +26,13 @@ spring: datasource: type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.mysql.jdbc.Driver - url: jdbc:mysql://127.0.0.1:3306/single_open?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8 - username: single_open - password: 111111 + url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8 + username: root + password: 123456 redis: - host: 127.0.0.1 #地址 + host: 192.168.33.10 #地址 port: 6379 #端口 - password: 111111 + password: 123456 timeout: 10000 # 连接超时时间（毫秒） database: 6 #默认数据库 jedis: diff --git a/crmeb/crmeb-admin/src/main/resources/application.yml b/crmeb/crmeb-admin/src/main/resources/application.yml index df2e2ae4..e3859d29 100644 --- a/crmeb/crmeb-admin/src/main/resources/application.yml +++ b/crmeb/crmeb-admin/src/main/resources/application.yml @@ -39,7 +39,7 @@ spring: profiles: # 配置的环境 # active: #spring.profiles.active# - active: + active: dev servlet: multipart: max-file-size: 50MB #设置单个文件大小 @@ -54,39 +54,44 @@ spring: datasource: type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.mysql.jdbc.Driver - url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC - username: single_open - password: 111111 + url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8 + username: root + password: 123456 # quartz quartz: - properties: - org: - quartz: - scheduler: - instanceName: quartzScheduler - # instanceName: clusteredScheduler - instanceId: AUTO - jobStore: - class: org.quartz.impl.jdbcjobstore.JobStoreTX - driverDelegateClass: org.quartz.impl.jdbcjobstore.StdJDBCDelegate - tablePrefix: QRTZ_ - isClustered: false - clusterCheckinInterval: 10000 - useProperties: false - # dataSource: crmeb_java_beta - threadPool: - class: org.quartz.simpl.SimpleThreadPool - threadCount: 10 - threadPriority: 5 - threadsInheritContextClassLoaderOfInitializingThread: true - #数据库方式 - job-store-type: JDBC + enable: false + auto-startup: false + startup-delay: 1000000 + + # quartz: + # properties: + # org: + # quartz: + # scheduler: + # instanceName: quartzScheduler + # # instanceName: clusteredScheduler + # instanceId: AUTO + # jobStore: + # class: org.quartz.impl.jdbcjobstore.JobStoreTX + # driverDelegateClass: org.quartz.impl.jdbcjobstore.StdJDBCDelegate + # tablePrefix: QRTZ_ + # isClustered: false + # clusterCheckinInterval: 10000 + # useProperties: false + # # dataSource: crmeb_java_beta + # threadPool: + # class: org.quartz.simpl.SimpleThreadPool + # threadCount: 10 + # threadPriority: 5 + # threadsInheritContextClassLoaderOfInitializingThread: true + # #数据库方式 + # job-store-type: JDBC redis: - host: 127.0.0.1 #地址 + host: 192.168.33.10 #地址 port: 6379 #端口 - password: 111111 + password: 123456 timeout: 30000 # 连接超时时间（毫秒） database: 6 #默认数据库 jedis: diff --git a/crmeb/crmeb-common/pom.xml b/crmeb/crmeb-common/pom.xml index bb1eef62..b82d8681 100644 --- a/crmeb/crmeb-common/pom.xml +++ b/crmeb/crmeb-common/pom.xml @@ -317,8 +317,46 @@ spring-boot-starter-captcha 1.3.0 - + + + org.projectlombok + lombok + 1.18.38 + + + commons-codec + commons-codec + 1.14 + + + + + org.apache.maven.plugins + maven-compiler-plugin + 3.6.1 + + 1.8 + 1.8 + UTF-8 + + -parameters + + + + + + + org.projectlombok + lombok + 1.18.38 + + + + + + + diff --git a/crmeb/crmeb-common/src/main/java/com/zbkj/common/interceptor/SwaggerInterceptor.java b/crmeb/crmeb-common/src/main/java/com/zbkj/common/interceptor/SwaggerInterceptor.java index fcf152f6..eeb993bd 100644 --- a/crmeb/crmeb-common/src/main/java/com/zbkj/common/interceptor/SwaggerInterceptor.java +++ b/crmeb/crmeb-common/src/main/java/com/zbkj/common/interceptor/SwaggerInterceptor.java @@ -6,7 +6,8 @@ import org.springframework.util.AntPathMatcher; import org.springframework.util.FileCopyUtils; import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; -import sun.misc.BASE64Decoder; +// import sun.misc.BASE64Decoder; +import org.apache.commons.codec.binary.Base64; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; @@ -52,7 +53,7 @@ public boolean preHandle(HttpServletRequest request, HttpServletResponse respons public boolean httpBasicAuth(String authorization) throws IOException { if(check){ if (authorization != null && authorization.split(" ").length == 2) { - String userAndPass = new String(new BASE64Decoder().decodeBuffer(authorization.split(" ")[1])); + String userAndPass = new String(Base64.decodeBase64(authorization.split(" ")[1])); String username = userAndPass.split(":").length == 2 ? userAndPass.split(":")[0] : null; String password = userAndPass.split(":").length == 2 ? userAndPass.split(":")[1] : null; return this.username.equals(username) && this.password.equals(password); diff --git a/crmeb/crmeb-common/src/main/java/com/zbkj/common/utils/CrmebUtil.java b/crmeb/crmeb-common/src/main/java/com/zbkj/common/utils/CrmebUtil.java index d7b2129b..ffe544a9 100644 --- a/crmeb/crmeb-common/src/main/java/com/zbkj/common/utils/CrmebUtil.java +++ b/crmeb/crmeb-common/src/main/java/com/zbkj/common/utils/CrmebUtil.java @@ -9,6 +9,7 @@ import com.alibaba.fastjson.JSONObject; import com.zbkj.common.constants.Constants; import org.apache.commons.lang3.StringUtils; +import org.springframework.stereotype.Component; import javax.servlet.http.HttpServletRequest; import java.io.UnsupportedEncodingException; @@ -31,6 +32,7 @@ * | Author: CRMEB Team * +---------------------------------------------------------------------- */ +@Component public class CrmebUtil { public static String encryptPassword(String pwd, String key) { diff --git a/crmeb/pom.xml b/crmeb/pom.xml index 21f741f2..18e244d0 100644 --- a/crmeb/pom.xml +++ b/crmeb/pom.xml @@ -308,7 +308,11 @@ jwks-rsa 0.9.0 - + + org.projectlombok + lombok + 1.18.38 + @@ -328,6 +332,13 @@ + + + org.projectlombok + lombok + 1.18.38 + + diff --git a/crmeb_admin_log/log_debug.log b/crmeb_admin_log/log_debug.log new file mode 100644 index 00000000..1cdc4249 --- /dev/null +++ b/crmeb_admin_log/log_debug.log @@ -0,0 +1,7610 @@ +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:27:44.761", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:27:45.206", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:27:45.414", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:27:45.420", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@1efe439d" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:27:59.860", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:27:59.864", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:27:59.867", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:00.912", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:03.136", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:03.139", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:03.238", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:03.242", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:03.249", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:03.255", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:03.265", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:03.272", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:11.812", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:12.339", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:12.780", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:12.792", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@78d6692f" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:29.281", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:29.291", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:29.377", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:31.305", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:35.100", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:35.161", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:35.392", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:35.411", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:35.510", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:35.611", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:35.634", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:56:35.651", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:57:41.511", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:57:42.389", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": "Application failed to start due to an exception" } + +org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} + at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:41) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:29.469", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:29.801", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:30.033", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:30.037", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@39a2bb97" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:43.892", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:43.908", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:43.977", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:45.349", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:47.981", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:47.995", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:48.247", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:48.260", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:48.343", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:48.360", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:48.377", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:14:48.494", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:15:16.615", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:15:17.186", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": "Application failed to start due to an exception" } + +org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} + at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:41) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:20.557", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:20.819", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:20.949", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:20.952", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@1b84f475" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:29.910", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:29.912", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:29.915", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:31.050", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:32.972", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:32.978", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:33.100", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:33.119", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:33.129", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:33.183", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:33.285", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:33.306", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:47.409", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:47.978", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": "Application failed to start due to an exception" } + +org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} + at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:41) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:09.101", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:09.402", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:09.541", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:09.543", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@38089a5a" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:19.714", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:19.717", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:19.728", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:20.936", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:22.796", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:22.799", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:22.927", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:22.935", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:22.950", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:22.997", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:23.001", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:23.013", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:35.818", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:36.292", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": "Application failed to start due to an exception" } + +org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} + at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:41) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:34:51.429", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:34:51.846", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:34:52.005", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:34:52.012", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@64a40280" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:02.629", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:02.646", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:02.724", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:04.663", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:06.758", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:06.764", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:06.915", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:06.921", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:06.936", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:06.951", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:06.989", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:07.000", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:23.942", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:24.825", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": "Application failed to start due to an exception" } + +org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} + at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:46) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:00.183", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:00.454", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:00.614", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:00.617", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@76a2ddf3" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:08.825", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:08.889", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:09.040", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:10.141", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:11.688", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:11.691", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:11.784", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:11.788", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:11.792", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:11.795", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:11.801", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:11.809", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:24.441", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:24.970", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": "Application failed to start due to an exception" } + +org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} + at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:46) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:43.303", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:43.721", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:43.966", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:43.970", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@38aa816f" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:52.546", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:52.553", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:52.559", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:53.620", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:55.459", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:55.462", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:55.554", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:55.559", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:55.564", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:55.566", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:55.574", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:56:55.583", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:57:07.982", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:57:08.719", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": "Application failed to start due to an exception" } + +org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} + at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:52) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:16:54.385", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:16:54.656", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:16:54.815", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:16:54.818", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4f5991f6" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:02.735", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:02.739", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:02.743", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:03.977", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:05.560", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:05.565", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:05.641", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:05.643", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:05.649", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:05.654", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:05.661", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:05.663", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:17.306", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:17.794", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": "Application failed to start due to an exception" } + +org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} + at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:52) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:39.613", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:40.311", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:40.842", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:40.893", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@6aecbb8d" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:53.648", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:53.653", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:53.674", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:55.505", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:58.587", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:58.599", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:58.752", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:58.809", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:58.840", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:58.857", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:58.874", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:10:58.911", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:11:16.344", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:11:16.939", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": "Application failed to start due to an exception" } + +org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} + at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:19:42.276", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:19:42.862", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:19:43.037", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:19:43.042", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4da602fc" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:19:59.873", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:19:59.881", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:19:59.915", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:02.733", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:07.853", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:07.930", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:08.173", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:08.205", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:08.270", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:08.303", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:08.403", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:08.436", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:31.281", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:31.850", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": "Application failed to start due to an exception" } + +org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} + at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:11:48.094", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:11:48.730", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:11:49.131", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:11:49.152", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@56bca85b" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:01.502", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:01.508", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:01.513", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:03.048", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:05.783", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:05.788", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:05.866", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:05.869", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:05.875", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:05.882", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:05.888", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:05.901", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:23.781", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:13.341", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:13.863", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:14.483", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:14.499", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:14.506", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:14.521", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:14.542", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@dcfda20" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:27.334", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:27.358", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:27.367", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:28.738", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:31.845", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:31.854", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:31.979", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:31.984", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:31.989", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:31.991", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:32.007", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:32.009", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:50.908", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:21:56.611", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:21:57.384", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:21:57.678", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:21:57.682", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:21:57.686", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:21:57.689", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:21:57.694", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@285c08c8" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:12.177", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:12.183", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:12.198", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:13.997", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:16.971", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:16.983", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:17.186", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:17.199", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:17.234", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:17.240", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:17.282", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:17.303", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:39.872", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:05.325", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:06.109", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:06.394", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:06.416", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:06.433", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:06.677", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:06.761", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@27953a83" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:25.924", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:25.930", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:26.012", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:28.457", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:34.980", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:35.083", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:35.448", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:35.472", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:35.498", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:35.520", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:35.530", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:29:35.535", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:30:03.291", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:40:14.648", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:40:17.088", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:40:18.072", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:40:18.143", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:40:18.255", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:40:18.296", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:40:18.397", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@53812a9b" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:40:53.825", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:40:53.853", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:40:54.018", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:40:57.790", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:41:03.582", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:41:03.718", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:41:03.994", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:41:04.021", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:41:04.038", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:41:04.059", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:41:04.108", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:41:04.121", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:44:20.768", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:01.745", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:03.407", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:03.676", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:03.680", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:03.684", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:03.687", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:03.692", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@2b5825fa" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:29.706", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:29.728", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:29.757", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:32.746", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:37.686", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:37.783", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:38.003", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:38.013", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:38.017", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:38.026", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:38.032", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:45:38.035", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:54:54.108", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:32.243", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:32.869", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:33.029", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:33.031", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:33.037", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:33.040", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:33.043", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@56bca85b" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:45.240", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:45.268", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:45.273", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:47.269", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:49.868", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:49.889", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:50.140", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:50.189", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:50.252", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:50.272", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:50.357", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:02:50.443", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:04:49.327", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:10:49.388", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:10:49.709", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:10:49.917", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:10:49.918", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:10:49.920", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:10:49.924", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:10:49.949", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@749c877b" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:02.232", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:02.239", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:02.244", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:03.562", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:06.072", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:06.132", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:06.427", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:06.431", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:06.467", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:06.495", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:06.548", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:11:06.592", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:12:15.977", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:11.860", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:12.247", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:12.434", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:12.435", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:12.437", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:12.439", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:12.442", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@a4b2d8f" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:25.544", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:25.559", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:25.613", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:27.381", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:29.724", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:29.731", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:29.833", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:29.837", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:29.845", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:29.849", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:29.852", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:29.867", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:59.572", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application failed to start with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:09.791", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:10.243", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:10.601", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:10.614", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:10.627", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:10.629", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:10.652", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4fc5e095" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:29.849", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:29.860", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:29.873", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:31.875", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:35.912", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:35.944", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:36.212", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:36.304", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:36.431", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:36.491", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:36.525", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:27:36.611", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:28:27.310", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "331 mappings in 'requestMappingHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:28:28.985", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", + "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:28:29.056", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", + "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:28:29.437", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:28:29.555", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.358", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4fc5e095, started on Tue Aug 19 15:27:10 CST 2025" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.461", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Beans' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.490", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Caches' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.494", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Health' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.499", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Info' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.514", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Conditions' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.542", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Configprops' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.547", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Env' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.549", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Loggers' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.556", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Threaddump' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.557", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Metrics' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.559", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Scheduledtasks' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:12:39.563", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Mappings' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:37.121", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:37.432", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:37.635", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:37.643", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:37.654", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:37.662", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:37.686", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@6f8f9349" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:46.606", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:46.609", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:46.611", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:47.637", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:49.327", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:49.332", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:49.401", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:49.403", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:49.407", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:49.412", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:49.419", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:13:49.422", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:14:05.041", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "331 mappings in 'requestMappingHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:14:05.952", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", + "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:14:05.975", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", + "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:14:06.140", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:14:06.171", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:26.969", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:27.186", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:27.445", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:27.448", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:27.450", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:27.468", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:27.484", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@22b53226" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:37.115", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:37.118", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:37.121", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:38.772", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:40.841", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:40.960", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:41.071", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:41.106", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:41.131", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:41.171", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:41.200", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:20:41.232", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:21:07.372", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "331 mappings in 'requestMappingHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:21:09.174", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", + "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:21:09.213", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", + "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:21:09.387", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:21:09.415", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.325", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@22b53226, started on Tue Aug 19 17:20:27 CST 2025" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.354", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Beans' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.355", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Caches' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.357", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Health' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.358", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Info' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.365", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Conditions' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.366", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Configprops' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.369", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Env' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.370", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Loggers' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.372", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Threaddump' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.374", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Metrics' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.375", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Scheduledtasks' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:26.379", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Mappings' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:48.465", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:48.743", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:48.876", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:48.877", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:48.879", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:48.881", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:48.885", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@cb191ca" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:57.744", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:57.746", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:57.750", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:27:58.770", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:00.208", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:00.212", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:00.273", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:00.276", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:00.278", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:00.281", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:00.287", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:00.295", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:15.930", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "331 mappings in 'requestMappingHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:17.434", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", + "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:17.480", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", + "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:17.671", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:28:17.708", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.348", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@cb191ca, started on Tue Aug 19 17:27:48 CST 2025" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.411", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Beans' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.414", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Caches' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.423", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Health' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.430", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Info' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.441", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Conditions' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.445", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Configprops' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.456", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Env' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.459", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Loggers' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.461", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Threaddump' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.468", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Metrics' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.475", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Scheduledtasks' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:21.479", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Mappings' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:34.840", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:35.285", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:35.505", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:35.507", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:35.509", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:35.514", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:35.516", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@505a9d7c" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:51.825", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:51.827", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:51.830", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:54.108", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:57.264", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:57.273", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:57.401", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:57.407", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:57.413", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:57.422", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:57.434", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:35:57.449", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:36:22.225", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "331 mappings in 'requestMappingHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:36:24.831", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", + "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:36:24.970", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", + "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:36:25.271", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:36:25.335", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.883", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@505a9d7c, started on Tue Aug 19 17:35:35 CST 2025" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.924", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Beans' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.935", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Caches' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.941", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Health' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.944", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Info' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.950", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Conditions' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.955", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Configprops' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.957", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Env' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.961", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Loggers' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.968", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Threaddump' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.970", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Metrics' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.973", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Scheduledtasks' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:29.986", + "level": "DEBUG", + "thread": "SpringContextShutdownHook", + "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", + "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Mappings' from the JMX domain" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:44.550", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", + "message": "Application started with classpath: unknown" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:45.361", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:45.629", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Activated activeProfiles dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:45.633", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:45.637", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Profiles already activated, '[dev]' will not be applied" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:45.644", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.c.c.ConfigFileApplicationListener", + "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:44:45.667", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", + "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@dcfda20" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:07.718", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:07.735", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:07.828", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", + "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:10.854", + "level": "DEBUG", + "thread": "main", + "class": "o.s.web.context.ContextLoader", + "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:30.619", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:31.410", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.ServletContextInitializerBeans", + "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:32.099", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", + "message": "Filter 'webMvcMetricsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:32.587", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedRequestContextFilter", + "message": "Filter 'requestContextFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:32.936", + "level": "DEBUG", + "thread": "main", + "class": "o.springframework.web.filter.CorsFilter", + "message": "Filter 'corsFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:33.234", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", + "message": "Filter 'characterEncodingFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:33.839", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", + "message": "Filter 'springSecurityFilterChain' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:45:34.126", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.w.s.f.OrderedFormContentFilter", + "message": "Filter 'formContentFilter' configured for use" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:46:31.574", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "331 mappings in 'requestMappingHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:46:33.469", + "level": "DEBUG", + "thread": "main", + "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", + "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:46:33.537", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", + "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:46:33.990", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:46:34.071", + "level": "DEBUG", + "thread": "main", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:11.910", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Detected StandardServletMultipartResolver" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:11.970", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "enableLoggingRequestDetails='false': request parameters and headers will be masked to prevent unsafe logging of potentially sensitive data" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.160", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/doc.html", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.212", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.423", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.466", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/ext/i18n.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.497", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/jquery/jquery-1.9.1.min.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.503", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/ace/bootstrap.min.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.516", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/ace/ace.min.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.686", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/jquery/clipboard/clipboard.min.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.718", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/bootstrap/css/bootstrap.min.css", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.753", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.780", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.855", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.862", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:12.989", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:13.123", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:13.207", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:13.462", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:13.468", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:13.502", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:13.703", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:13.816", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:13.854", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/layer3.0.3/skin/default/layer.css", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:13.896", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/highlight/styles/docco.css", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:13.941", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/highlight/styles/default.css", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:13.958", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/highlight/styles/style.css", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:14.040", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/cdao/swaggerbootstrapui.css?v=1.9.3", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:14.107", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/iconfont/iconfont.css", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:14.182", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:14.280", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:14.372", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:14.470", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:14.558", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:14.703", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:14.863", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:14.954", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.007", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.088", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.103", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.232", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.258", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/layui/css/layui.css", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.272", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/ext/sbuadmin.css", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.296", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/bootstrap-tabx/css/bootstrap-tabs-x.min.css", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.321", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/cdao/swaggerbootstrapui-md.css?v=1.9.3", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.474", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/layer3.0.3/layer.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.602", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/highlight/highlight.pack.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.631", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.651", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.781", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:15.925", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.042", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.131", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.271", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.272", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.333", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.347", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.489", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.503", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.522", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/jquery/template-web.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.640", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/jquery/marked.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.709", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/jquery/axios.min.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.876", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/bootstrap-tabx/js/bootstrap-tabs-x.min.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:16.965", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/layui/layui.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:17.072", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/layer3.0.3/skin/default/layer.css?v=3.0.3303", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:17.140", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:17.324", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:17.418", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:17.666", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:17.859", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + 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"o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.004", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.194", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.334", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/ace-editor/ace.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.434", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/jquery/showdown.min.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.492", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/jquery/async.min.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.540", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/cdao/swaggerbootstrapui.js?v=1.9.3", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.652", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/jquery/md5.min.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.685", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.694", + "level": "DEBUG", + "thread": "http-nio-20500-exec-4", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.706", + "level": "DEBUG", + "thread": "http-nio-20500-exec-2", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.766", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:19.871", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": 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17:49:20.939", + "level": "DEBUG", + "thread": "http-nio-20500-exec-28", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:22.294", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/ext/sbuadmin.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:22.444", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:22.606", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:22.696", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/layui/lay/modules/layer.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:22.790", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:22.933", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:23.075", + "level": "DEBUG", + "thread": "http-nio-20500-exec-7", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/layui/lay/modules/element.js", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:23.111", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": 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and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:26.632", + "level": "DEBUG", + "thread": "http-nio-20500-exec-9", + "class": "o.s.w.s.m.m.a.HttpEntityMethodProcessor", + "message": "Writing [[springfox.documentation.swagger.web.SwaggerResource@444ded55, springfox.documentation.swagger.web.S (truncated)...]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:26.927", + "level": "DEBUG", + "thread": "http-nio-20500-exec-9", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:27.006", + "level": "DEBUG", + "thread": "http-nio-20500-exec-10", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/v2/api-docs?group=admin", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:29.392", + "level": "DEBUG", + "thread": "http-nio-20500-exec-10", + "class": "o.s.w.s.m.m.a.HttpEntityMethodProcessor", + "message": "Using 'application/json', given [application/json, text/javascript, */*;q=0.01] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:29.769", + "level": "DEBUG", + "thread": "http-nio-20500-exec-10", + "class": "o.s.w.s.m.m.a.HttpEntityMethodProcessor", + "message": "Writing [springfox.documentation.spring.web.json.Json@297afbf]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:30.022", + "level": "DEBUG", + "thread": "http-nio-20500-exec-10", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:32.014", + "level": "DEBUG", + "thread": "http-nio-20500-exec-16", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/images/api.ico", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:32.046", + "level": "DEBUG", + "thread": "http-nio-20500-exec-16", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:49:32.244", + "level": "DEBUG", + "thread": "http-nio-20500-exec-16", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:53:08.711", + "level": "DEBUG", + "thread": "http-nio-20500-exec-18", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/layer3.0.3/skin/default/loading-2.gif", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:53:08.724", + "level": "DEBUG", + "thread": "http-nio-20500-exec-18", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:53:08.748", + "level": "DEBUG", + "thread": "http-nio-20500-exec-18", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:53:44.573", + "level": "DEBUG", + "thread": "http-nio-20500-exec-19", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/webjars/bycdao-ui/layui/font/iconfont.woff?v=240", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:53:44.590", + "level": "DEBUG", + "thread": "http-nio-20500-exec-19", + "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", + "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:53:44.681", + "level": "DEBUG", + "thread": "http-nio-20500-exec-19", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:00:08.648", + "level": "DEBUG", + "thread": "http-nio-20500-exec-22", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/getLoginPic?temp=1755597604", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:00:08.816", + "level": "DEBUG", + "thread": "http-nio-20500-exec-23", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "POST "/api/admin/login/account/detection", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:00:08.974", + "level": "DEBUG", + "thread": "http-nio-20500-exec-23", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#accountDetection(AdminAccountDetectionRequest)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:00:09.091", + "level": "DEBUG", + "thread": "http-nio-20500-exec-22", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#getLoginPic()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:00:14.355", + "level": "DEBUG", + "thread": "http-nio-20500-exec-23", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Read "application/json;charset=UTF-8" to [AdminAccountDetectionRequest(account=demo)]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:00:25.004", + "level": "DEBUG", + "thread": "http-nio-20500-exec-23", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:00:25.168", + "level": "DEBUG", + "thread": "http-nio-20500-exec-23", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@6b03c941]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:00:25.210", + "level": "DEBUG", + "thread": "http-nio-20500-exec-23", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:00:28.794", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "POST "/api/admin/login", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:00:29.002", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#SystemAdminLogin(SystemAdminLoginRequest, HttpServletRequest)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:00:29.304", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Read "application/json;charset=UTF-8" to [SystemAdminLoginRequest(account=demo, pwd=crmeb.com, captchaVO=com.anji.captcha.model.vo.CaptchaVO@2 (truncated)...]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:26.659", + "level": "DEBUG", + "thread": "http-nio-20500-exec-22", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:27.226", + "level": "DEBUG", + "thread": "http-nio-20500-exec-22", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@739eec31]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:27.766", + "level": "DEBUG", + "thread": "http-nio-20500-exec-22", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:36.124", + "level": "DEBUG", + "thread": "http-nio-20500-exec-27", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/getLoginPic?temp=1755597695", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:36.397", + "level": "DEBUG", + "thread": "http-nio-20500-exec-3", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "POST "/api/admin/login/account/detection", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:37.440", + "level": "DEBUG", + "thread": "http-nio-20500-exec-27", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#getLoginPic()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:38.140", + "level": "DEBUG", + "thread": "http-nio-20500-exec-3", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#accountDetection(AdminAccountDetectionRequest)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:40.428", + "level": "DEBUG", + "thread": "http-nio-20500-exec-3", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Read "application/json;charset=UTF-8" to [AdminAccountDetectionRequest(account=demo)]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:43.811", + "level": "DEBUG", + "thread": "http-nio-20500-exec-27", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:43.890", + "level": "DEBUG", + "thread": "http-nio-20500-exec-27", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@57e48101]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:43.897", + "level": "DEBUG", + "thread": "http-nio-20500-exec-27", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:46.257", + "level": "DEBUG", + "thread": "http-nio-20500-exec-3", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:46.469", + "level": "DEBUG", + "thread": "http-nio-20500-exec-3", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@3cf4e0a0]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:46.488", + "level": "DEBUG", + "thread": "http-nio-20500-exec-3", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:58.877", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "Using @ExceptionHandler com.zbkj.service.exception.GlobalExceptionHandler#defaultExceptionHandler(HttpServletRequest, Exception)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:59.414", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:59.422", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@7c4a5939]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:59.426", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "Resolved [com.zbkj.common.exception.CrmebException: 账号或密码不正确]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:59.428", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:24.646", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "POST "/api/admin/login", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:24.781", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#SystemAdminLogin(SystemAdminLoginRequest, HttpServletRequest)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:24.849", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Read "application/json;charset=UTF-8" to [SystemAdminLoginRequest(account=demo, pwd=crmeb.com, captchaVO=com.anji.captcha.model.vo.CaptchaVO@7 (truncated)...]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:31.249", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "Using @ExceptionHandler com.zbkj.service.exception.GlobalExceptionHandler#defaultExceptionHandler(HttpServletRequest, Exception)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:35.321", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:35.374", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@67970c70]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:35.412", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "Resolved [com.zbkj.common.exception.CrmebException: 账号或密码不正确]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:35.454", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:36.167", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "POST "/api/admin/login/account/detection", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:36.181", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#accountDetection(AdminAccountDetectionRequest)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:36.266", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Read "application/json;charset=UTF-8" to [AdminAccountDetectionRequest(account=demo)]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:36.583", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:36.597", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@3caeffa]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:36.640", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:13.840", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "POST "/api/admin/login", parameters={}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:13.916", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#SystemAdminLogin(SystemAdminLoginRequest, HttpServletRequest)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:13.933", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Read "application/json;charset=UTF-8" to [SystemAdminLoginRequest(account=demo, pwd=123456, captchaVO=com.anji.captcha.model.vo.CaptchaVO@5ef0 (truncated)...]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:28.423", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:28.585", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@4223b27c]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:28.824", + "level": "DEBUG", + "thread": "http-nio-20500-exec-6", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:31.558", + "level": "DEBUG", + "thread": "http-nio-20500-exec-14", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/getMenus?temp=1755597809", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:31.613", + "level": "DEBUG", + "thread": "http-nio-20500-exec-14", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#getMenus()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:31.847", + "level": "DEBUG", + "thread": "http-nio-20500-exec-13", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/system/config/get/site/logo?temp=1755597809", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:31.913", + "level": "DEBUG", + "thread": "http-nio-20500-exec-13", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.SystemConfigController#getSiteLogo()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:33.030", + "level": "DEBUG", + "thread": "http-nio-20500-exec-15", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/getAdminInfoByToken?token=722cbb55b1d547bd920b1c5ce94ea4e8&temp=1755597809", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:33.211", + "level": "DEBUG", + "thread": "http-nio-20500-exec-15", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#getAdminInfo()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:33.639", + "level": "DEBUG", + "thread": "http-nio-20500-exec-15", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:33.672", + "level": "DEBUG", + "thread": "http-nio-20500-exec-13", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:33.738", + "level": "DEBUG", + "thread": "http-nio-20500-exec-13", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@2f21ccad]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:33.700", + "level": "DEBUG", + "thread": "http-nio-20500-exec-15", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@3e7576f3]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:33.836", + "level": "DEBUG", + "thread": "http-nio-20500-exec-13", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:33.856", + "level": "DEBUG", + "thread": "http-nio-20500-exec-15", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:34.747", + "level": "DEBUG", + "thread": "http-nio-20500-exec-10", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/public/jsconfig/get/front/domain?temp=1755597813", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:34.931", + "level": "DEBUG", + "thread": "http-nio-20500-exec-10", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.pub.GetJSConfig#getFrontDomain()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:35.181", + "level": "DEBUG", + "thread": "http-nio-20500-exec-18", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/getMenus?temp=1755597814", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:35.212", + "level": "DEBUG", + "thread": "http-nio-20500-exec-18", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#getMenus()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:35.707", + "level": "DEBUG", + "thread": "http-nio-20500-exec-16", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/public/jsconfig/get/admin/mediadomain?temp=1755597813", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:35.745", + "level": "DEBUG", + "thread": "http-nio-20500-exec-16", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.pub.GetJSConfig#getMediaDomain()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:36.245", + "level": "DEBUG", + "thread": "http-nio-20500-exec-14", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:36.256", + "level": "DEBUG", + "thread": "http-nio-20500-exec-14", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@408e4c72]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:36.260", + "level": "DEBUG", + "thread": "http-nio-20500-exec-10", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:36.290", + "level": "DEBUG", + "thread": "http-nio-20500-exec-14", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:36.294", + "level": "DEBUG", + "thread": "http-nio-20500-exec-10", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@6c1405de]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:36.397", + "level": "DEBUG", + "thread": "http-nio-20500-exec-10", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:36.670", + "level": "DEBUG", + "thread": "http-nio-20500-exec-16", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:36.707", + "level": "DEBUG", + "thread": "http-nio-20500-exec-16", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@4a021dd0]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:36.736", + "level": "DEBUG", + "thread": "http-nio-20500-exec-16", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:38.609", + "level": "DEBUG", + "thread": "http-nio-20500-exec-18", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:39.200", + "level": "DEBUG", + "thread": "http-nio-20500-exec-18", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@7d6e9017]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:40.018", + "level": "DEBUG", + "thread": "http-nio-20500-exec-18", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:40.876", + "level": "DEBUG", + "thread": "http-nio-20500-exec-27", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/statistics/home/chart/order?temp=1755597819", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:40.966", + "level": "DEBUG", + "thread": "http-nio-20500-exec-27", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.HomeController#chartOrder()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:41.329", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/statistics/home/operating/data?temp=1755597819", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:41.427", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.HomeController#operatingData()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:41.542", + "level": "DEBUG", + "thread": "http-nio-20500-exec-3", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/statistics/home/index?temp=1755597819", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:41.594", + "level": "DEBUG", + "thread": "http-nio-20500-exec-3", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.HomeController#indexDate()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:41.900", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/statistics/user/channel?temp=1755597819", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:42.151", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.UserStatisticsController#getChannelData()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:42.468", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/statistics/home/chart/user?temp=1755597819", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:42.547", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.HomeController#chartUser()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:43.632", + "level": "DEBUG", + "thread": "http-nio-20500-exec-29", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/statistics/user/overview?dateLimit=lately7&temp=1755597819", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:43.965", + "level": "DEBUG", + "thread": "http-nio-20500-exec-29", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.UserStatisticsController#getOverview(String)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:44.284", + "level": "DEBUG", + "thread": "http-nio-20500-exec-29", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "Using @ExceptionHandler com.zbkj.service.exception.GlobalExceptionHandler#defaultExceptionHandler(HttpServletRequest, Exception)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:44.284", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "Using @ExceptionHandler com.zbkj.service.exception.GlobalExceptionHandler#defaultExceptionHandler(HttpServletRequest, Exception)" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:44.423", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:44.517", + "level": "DEBUG", + "thread": "http-nio-20500-exec-27", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:45.013", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@6ef2e6e1]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:45.037", + "level": "DEBUG", + "thread": "http-nio-20500-exec-27", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@5acc3e]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:45.573", + "level": "DEBUG", + "thread": "http-nio-20500-exec-30", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:45.581", + "level": "DEBUG", + "thread": "http-nio-20500-exec-27", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:47.597", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/copyright/get/info?temp=1755597819", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:47.673", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.CopyrightController#getInfo()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:50.299", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.client.RestTemplate", + "message": "HTTP POST https://authorize.crmeb.net/api/auth_cert_query?domain_name=http://1111&label=22&version=CRMEB-JAVA-KY-v1.4" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:50.452", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.client.RestTemplate", + "message": "Accept=[application/json, application/cbor, application/*+json, text/plain, text/html]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:50.856", + "level": "DEBUG", + "thread": "http-nio-20500-exec-3", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:50.863", + "level": "DEBUG", + "thread": "http-nio-20500-exec-3", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@2684c6c2]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:50.957", + "level": "DEBUG", + "thread": "http-nio-20500-exec-3", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:51.575", + "level": "DEBUG", + "thread": "http-nio-20500-exec-29", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:51.602", + "level": "DEBUG", + "thread": "http-nio-20500-exec-29", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@5fe17ca2]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:51.604", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:51.622", + "level": "DEBUG", + "thread": "http-nio-20500-exec-29", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "Resolved [org.springframework.security.access.AccessDeniedException: 不允许访问]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:51.623", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@572e6aab]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:51.691", + "level": "DEBUG", + "thread": "http-nio-20500-exec-29", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:51.732", + "level": "DEBUG", + "thread": "http-nio-20500-exec-25", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:54.658", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:54.672", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@252a3ce2]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:54.679", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", + "message": "Resolved [org.springframework.security.access.AccessDeniedException: 不允许访问]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:54.694", + "level": "DEBUG", + "thread": "http-nio-20500-exec-1", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:59.454", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.client.RestTemplate", + "message": "Response 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:59.470", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.client.RestTemplate", + "message": "Reading to [com.alibaba.fastjson.JSONObject]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:59.517", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:59.528", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@1949af4e]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:59.540", + "level": "DEBUG", + "thread": "http-nio-20500-exec-5", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 21:39:56.064", + "level": "DEBUG", + "thread": "http-nio-20500-exec-13", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "GET "/api/admin/statistics/home/chart/order/year?temp=1755610795", parameters={masked}" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 21:39:56.080", + "level": "DEBUG", + "thread": "http-nio-20500-exec-13", + "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", + "message": "Mapped to com.zbkj.admin.controller.HomeController#chartOrderInYear()" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 21:39:56.302", + "level": "DEBUG", + "thread": "http-nio-20500-exec-13", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 21:39:56.320", + "level": "DEBUG", + "thread": "http-nio-20500-exec-13", + "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", + "message": "Writing [com.zbkj.common.result.CommonResult@76976488]" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 21:39:56.333", + "level": "DEBUG", + "thread": "http-nio-20500-exec-13", + "class": "o.s.web.servlet.DispatcherServlet", + "message": "Completed 200 OK" } + diff --git a/crmeb_admin_log/log_error.log b/crmeb_admin_log/log_error.log new file mode 100644 index 00000000..9ba0a45e --- /dev/null +++ b/crmeb_admin_log/log_error.log @@ -0,0 +1,102369 @@ +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:10.634", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:10.660", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:11.202", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:11.741", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:12.296", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:12.825", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:13.339", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:13.850", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:14.362", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:14.880", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:15.397", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:15.914", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:16.429", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:16.951", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:17.470", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:17.986", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:18.498", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:19.010", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:19.529", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:20.038", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:20.561", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:21.073", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:21.595", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:22.106", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:22.623", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:23.135", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:23.651", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:24.166", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:24.680", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:25.188", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:25.705", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:26.232", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:26.767", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:27.280", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:27.791", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:28.305", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:28.822", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:29.338", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:29.850", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:30.367", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:30.889", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:31.411", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:31.924", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:32.441", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:32.956", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:33.469", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:33.976", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:34.493", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:35.006", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:35.511", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:36.027", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:36.549", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:37.062", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:37.577", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:38.090", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:38.600", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:39.111", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:39.624", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:40.132", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:40.645", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:41.154", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:41.673", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:42.182", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:42.795", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:43.344", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:43.855", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:44.370", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:44.882", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:45.394", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:45.903", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:46.415", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:46.925", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:47.435", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:47.951", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:48.463", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:48.978", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:49.497", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:50.008", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:50.521", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:51.039", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:51.557", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:52.075", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:52.586", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:53.096", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:53.608", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:54.124", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:54.640", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:55.151", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:55.661", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:56.181", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:56.701", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:57.209", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:57.720", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:58.228", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:58.741", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:59.253", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:28:59.764", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:00.277", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:00.794", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:01.325", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:01.883", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:02.399", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:02.926", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:03.511", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:04.031", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:04.547", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:05.063", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:05.582", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:06.114", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:06.685", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:07.202", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:07.738", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:08.250", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:08.763", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:09.279", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:09.806", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:10.323", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:10.836", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:11.350", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:11.868", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:12.380", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:12.887", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:13.400", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:13.914", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:14.422", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:14.937", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:15.458", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:15.978", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:16.507", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:17.020", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:17.534", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:18.043", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:18.554", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:19.064", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:19.574", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:20.091", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:20.607", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:21.124", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:21.646", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:22.159", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:22.681", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:23.193", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:23.706", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:24.220", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:24.727", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:25.242", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:25.754", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:26.303", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:26.841", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:27.349", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:27.859", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:28.369", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:28.880", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:29.396", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:29.909", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:30.418", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:30.933", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:31.452", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:31.967", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:32.481", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:33.002", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:33.513", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:34.021", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:34.533", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:35.048", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:35.552", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:36.068", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:36.590", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:37.102", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:37.617", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:38.137", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:38.651", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:39.164", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:39.673", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:40.192", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:40.704", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:41.218", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:41.743", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:42.254", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:42.764", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:43.273", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:43.788", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:44.302", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:44.813", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:45.325", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:45.839", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:46.351", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:46.863", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:47.379", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:47.892", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:48.409", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:48.923", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:49.437", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:49.946", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:50.466", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:50.979", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:51.507", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:52.016", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:52.528", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:53.042", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:53.551", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:54.064", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:54.577", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:55.093", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:55.610", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:56.140", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:56.679", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:57.194", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:57.703", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:58.214", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:58.725", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:59.234", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:29:59.746", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:00.253", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:00.766", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:01.282", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:01.832", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:02.342", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:02.853", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:03.372", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:03.887", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:04.399", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:04.906", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:05.426", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:05.943", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:06.454", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:06.968", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:07.475", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:07.988", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:08.505", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:09.018", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:09.525", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:10.038", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:10.545", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:11.058", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:11.574", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:12.087", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:12.593", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:13.108", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:13.622", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:14.132", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:14.643", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:15.153", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:15.664", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:16.178", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:16.702", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:17.212", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:17.730", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:18.243", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:18.752", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:19.263", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:19.775", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:20.284", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:20.795", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:21.310", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:21.828", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:22.344", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:22.854", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:23.365", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:23.879", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:24.389", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:24.901", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:25.415", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:25.924", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:26.437", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:26.952", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:27.466", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:27.976", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:28.488", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:29.006", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:29.534", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:30.051", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:30.560", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:31.073", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:31.602", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:32.111", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:32.623", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:33.144", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:33.662", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:34.178", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:34.693", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:35.207", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:35.722", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:36.235", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:36.758", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:37.280", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:37.793", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:38.305", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:38.815", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:39.330", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:39.849", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:40.360", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:40.870", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:41.397", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:41.968", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:42.498", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:43.013", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:43.525", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:44.036", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:44.549", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:45.062", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:45.570", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:46.083", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:46.628", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:47.137", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:47.649", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:48.168", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:48.683", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:49.197", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:49.706", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:50.218", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:50.730", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:51.241", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:51.783", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:52.295", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:52.808", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:53.320", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:53.837", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:54.349", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:54.861", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:55.374", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:55.889", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:56.410", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:56.946", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:57.461", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:57.974", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:58.490", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:59.008", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:30:59.524", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:00.038", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:00.550", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:01.068", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:01.596", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:02.113", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:02.625", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:03.147", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:03.660", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:04.175", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:04.683", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:05.197", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:05.713", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:06.230", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:06.760", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:07.270", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:07.782", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:08.299", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:08.815", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:09.332", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:09.844", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:10.359", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:10.914", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:11.456", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:11.969", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:12.531", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:13.041", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:13.555", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:14.067", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:14.582", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:15.098", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:15.607", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:16.120", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:16.656", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:17.169", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:17.681", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:18.190", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:18.703", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:19.216", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:19.724", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:20.241", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:20.758", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:21.273", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:21.820", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:22.329", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:22.842", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:23.353", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:23.862", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:24.375", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:24.887", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:25.396", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:25.910", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:26.424", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:26.932", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:27.450", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:27.968", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:28.483", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:28.994", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:29.505", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:30.019", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:30.530", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:31.042", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:31.563", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:32.076", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:32.594", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:33.103", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:33.614", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:34.125", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:34.633", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:35.148", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:35.656", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:36.169", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:36.688", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:37.201", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:37.714", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:38.221", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:38.733", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:39.247", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:39.756", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:40.269", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:40.785", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:41.305", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:41.854", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:42.385", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:42.912", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:43.436", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:43.951", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:44.458", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:44.971", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:45.485", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:45.992", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:46.516", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:47.029", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:47.542", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:48.058", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:48.572", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:49.087", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:49.595", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:50.110", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:50.624", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:51.137", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:51.673", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:52.180", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:52.694", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:53.204", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:53.715", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:54.230", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:54.747", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:55.260", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:55.768", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:56.279", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:56.794", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:57.302", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:57.815", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:58.332", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:58.843", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:59.353", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:31:59.863", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:00.372", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:00.884", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:01.401", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:01.916", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:02.430", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:02.955", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:03.471", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:03.984", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:04.492", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:05.003", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:05.522", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:06.037", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:06.569", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:07.081", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:07.601", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:08.109", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:08.622", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:09.131", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:09.639", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:10.150", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:10.656", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:11.165", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:11.692", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:12.206", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:12.716", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:13.228", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:13.742", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:14.251", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:14.760", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:15.270", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:15.776", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:16.286", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:16.798", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:17.309", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:17.819", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:18.329", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:18.840", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:19.345", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:19.854", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:20.364", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:20.875", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:21.385", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:21.894", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:22.402", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:22.918", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:23.430", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:23.940", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:24.456", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:24.970", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:25.479", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:25.989", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:26.513", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:27.023", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:27.534", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:28.044", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:28.551", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:29.063", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:29.574", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:30.084", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:30.591", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:31.100", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:31.638", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:32.149", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:32.658", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:33.172", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:33.689", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:34.208", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:34.722", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:35.231", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:35.741", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:36.253", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:36.798", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:37.306", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:37.814", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:38.325", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:38.833", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:39.341", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:39.847", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:40.357", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:40.867", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:41.397", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:41.908", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:42.424", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:42.931", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:43.441", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:43.947", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:44.458", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:44.965", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:45.477", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:45.986", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:46.514", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:47.030", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:47.540", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:48.048", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:48.556", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:49.064", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:49.571", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:50.079", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:50.586", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:51.106", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:51.640", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:52.149", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:52.656", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:53.165", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:53.672", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:54.185", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:54.693", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:55.202", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:55.712", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:56.222", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:56.755", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:57.267", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:57.773", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:58.284", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:58.793", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:59.304", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:32:59.814", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:00.326", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:00.840", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:01.350", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:01.858", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:02.370", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:02.878", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:03.391", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:03.899", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:04.406", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:04.913", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:05.424", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:05.932", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:06.443", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:06.957", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:07.463", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:07.975", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:08.480", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:08.989", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:09.497", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:10.008", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:10.515", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:11.029", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:11.548", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:12.065", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:12.577", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:13.082", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:13.591", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:14.099", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:14.608", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:15.116", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:15.626", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:16.136", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:16.670", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:17.185", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:17.695", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:18.207", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:18.716", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:19.226", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:19.735", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:20.247", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:20.756", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:21.272", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:21.809", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:22.320", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:22.827", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:23.336", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:23.844", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:24.353", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:24.859", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:25.370", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:25.877", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:26.387", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:26.894", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:27.405", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:27.914", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:28.424", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:28.932", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:29.446", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:29.957", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:30.463", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:30.973", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:31.480", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:31.990", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:32.498", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:33.012", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:33.522", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:34.030", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:34.543", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:35.050", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:35.560", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:36.067", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:36.590", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:37.099", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:37.611", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:38.117", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:38.629", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:39.145", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:39.663", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:40.169", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:40.680", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:41.188", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:41.706", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:42.216", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:42.723", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:43.234", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:43.741", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:44.252", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:44.763", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:45.271", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:45.780", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:46.287", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:46.794", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:47.305", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:47.816", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:48.324", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:48.836", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:49.341", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:49.852", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:50.361", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:50.871", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:51.378", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:51.888", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:52.398", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:52.941", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:53.448", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:53.958", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:54.464", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:54.975", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:55.482", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:55.993", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:56.512", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:57.020", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:57.528", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:58.034", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:58.542", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:59.048", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:33:59.565", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:00.074", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:00.583", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:01.098", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:01.636", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:02.153", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:02.669", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:03.178", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:03.685", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:04.196", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:04.703", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:05.213", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:05.720", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:06.231", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:06.773", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:07.283", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:07.791", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:08.306", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:08.819", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:09.328", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:09.839", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:10.348", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:10.858", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:11.368", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:11.875", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:12.393", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:12.903", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:13.409", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:13.920", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:14.427", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:14.936", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:15.444", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:15.958", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:16.463", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:16.973", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:17.481", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:17.993", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:18.500", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:19.011", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:19.517", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:20.028", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:20.536", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:21.044", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:21.566", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:22.080", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:22.587", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:23.095", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:23.604", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:24.114", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:24.621", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:25.130", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:25.636", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:26.147", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:26.663", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:27.171", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:27.681", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:28.190", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:28.700", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:29.208", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:29.717", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:30.225", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:30.732", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:31.247", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:31.799", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:32.305", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:32.817", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:33.333", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:33.840", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:34.350", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:34.858", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:35.374", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:35.885", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:36.393", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:36.908", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:37.424", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:37.933", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:38.441", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:38.954", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:39.461", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:39.971", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:40.478", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:40.991", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:41.508", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:42.014", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:42.524", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:43.030", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:43.539", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:44.046", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:44.563", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:45.081", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:45.591", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:46.098", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:46.628", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:47.133", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:47.642", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:48.149", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:48.659", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:49.167", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:49.678", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:50.183", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:50.695", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:51.202", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:51.722", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:52.233", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:52.739", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:53.251", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:53.757", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:54.267", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:54.774", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:55.284", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:55.793", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:56.301", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:56.813", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:57.326", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:57.839", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:58.351", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:58.858", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:59.368", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:34:59.874", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:00.385", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:00.893", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:01.403", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:01.909", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:02.425", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:02.933", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:03.441", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:03.948", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:04.457", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:04.966", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:05.475", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:05.982", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:06.493", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:07.002", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:07.510", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:08.017", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:08.529", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:09.035", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:09.545", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:10.052", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:10.561", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:11.069", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:11.587", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:12.097", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:12.602", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:13.111", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:13.619", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:14.128", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:14.635", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:15.145", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:15.654", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:16.163", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:16.680", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:17.186", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:17.704", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:18.215", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:18.722", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:19.236", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:19.747", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:20.254", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:20.762", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:21.286", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:21.797", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:22.306", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:22.817", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:23.325", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:23.835", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:24.343", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:24.852", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:25.360", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:25.942", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:26.460", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:26.970", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:27.478", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:27.987", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:28.496", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:29.006", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:29.512", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:30.022", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:30.528", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:31.041", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:31.563", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:32.074", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:32.584", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:33.095", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:33.604", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:34.113", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:34.622", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:35.132", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:35.645", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:36.151", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:36.681", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:37.187", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:37.695", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:38.201", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:38.711", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:39.218", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:39.728", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:40.238", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:40.747", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:41.263", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:41.805", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:42.315", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:42.823", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:43.334", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:43.840", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:44.350", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:44.857", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:45.367", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:45.875", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:46.384", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:46.892", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:47.401", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:47.908", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:48.421", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:48.927", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:49.439", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:49.953", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:50.469", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:50.986", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:51.493", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:52.003", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:52.509", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:53.018", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:53.527", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:54.034", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:54.542", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:55.048", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:55.559", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:56.065", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:56.585", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:57.095", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:57.604", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:58.111", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:58.617", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:59.129", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:35:59.637", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:00.147", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:00.656", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:01.172", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:01.687", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:02.197", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:02.703", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:03.220", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:03.730", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:04.236", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:04.746", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:05.252", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:05.762", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:06.276", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:06.804", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:07.314", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:07.824", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:08.334", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:08.840", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:09.350", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:09.859", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:10.368", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:10.876", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:11.385", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:11.893", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:12.404", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:12.912", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:13.423", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:13.929", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:14.438", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:14.945", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:15.456", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:15.964", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:16.473", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:16.980", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:17.493", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:17.998", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:18.506", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:19.014", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:19.523", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:20.031", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:20.545", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:21.063", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:21.580", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:22.094", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:22.600", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:23.112", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:23.629", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:24.137", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:24.645", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:25.151", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:25.668", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:26.180", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:26.697", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:27.203", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:27.711", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:28.218", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:28.728", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:29.238", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:29.748", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:30.256", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:30.769", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:31.279", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:31.804", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:32.315", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:32.823", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:33.332", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:33.839", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:34.349", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:34.857", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:35.369", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:35.876", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:36.385", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:36.891", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:37.402", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:37.908", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:38.420", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:38.927", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:39.437", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:39.943", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:40.454", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:40.961", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:41.481", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:41.990", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:42.497", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:43.007", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:43.514", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:44.025", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:44.531", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:45.039", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:45.545", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:46.055", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:46.575", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:47.082", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:47.591", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:48.097", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:48.605", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:49.114", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:49.623", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:50.132", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:50.640", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:51.149", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:51.669", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:52.180", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:52.688", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:53.197", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:53.704", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:54.215", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:54.731", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:55.237", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:55.766", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:56.287", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:56.805", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:57.316", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:57.827", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:58.337", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:58.844", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:59.353", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:36:59.860", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:00.369", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:00.875", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:01.385", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:01.892", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:02.402", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:02.908", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:03.424", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:03.932", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:04.441", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:04.947", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:05.456", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:05.965", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:06.472", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:06.979", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:07.489", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:07.995", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:08.506", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:09.013", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:09.523", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:10.031", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:10.544", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:11.052", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:11.580", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:12.090", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:12.596", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:13.104", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:13.612", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:14.119", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:14.627", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:15.133", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:15.645", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:16.152", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:16.679", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:17.187", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:17.699", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:18.206", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:18.716", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:19.224", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:19.735", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:20.242", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:20.751", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:21.267", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:21.804", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:22.315", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:22.825", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:23.336", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:23.844", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:24.351", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:24.862", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:25.371", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:25.883", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:26.392", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:26.905", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:27.419", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:27.926", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:28.439", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:28.945", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:29.457", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:29.964", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:30.473", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:30.979", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:31.489", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:31.997", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:32.506", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:33.013", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:33.522", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:34.030", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:34.540", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:35.047", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:35.557", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:36.064", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:36.582", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:37.095", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:37.603", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:38.112", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:38.621", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:39.131", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:39.638", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:40.146", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:40.653", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:41.164", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:41.679", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:42.186", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:42.696", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:43.202", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:43.713", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:44.219", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:44.724", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:45.234", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:45.740", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:46.253", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:46.824", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:47.335", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:47.842", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:48.353", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:48.859", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:49.370", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:49.876", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:50.388", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:50.895", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:51.405", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:51.915", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:52.426", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:52.942", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:53.451", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:53.959", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:54.466", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:54.976", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:55.483", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:55.994", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:56.505", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:57.012", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:57.523", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:58.032", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:58.543", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:59.051", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:37:59.564", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:00.075", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:00.581", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:01.095", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:01.631", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:02.142", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:02.651", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:03.161", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:03.668", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:04.182", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:04.693", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:05.200", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:05.710", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:06.219", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:06.754", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:07.264", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:07.773", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:08.281", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:08.790", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:09.299", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:09.807", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:10.316", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:10.825", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:11.335", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:11.842", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:12.351", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:12.859", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:13.368", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:13.874", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:14.385", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:14.893", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:15.403", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:15.909", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:16.425", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:16.935", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:17.442", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:17.950", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:18.459", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:18.971", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:19.478", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:19.988", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:20.495", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:21.006", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:21.527", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:22.033", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:22.545", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:23.058", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:23.563", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:24.077", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:24.583", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:25.095", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:25.601", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:26.111", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:26.633", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:27.144", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:27.651", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:28.166", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:28.679", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:29.188", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:29.700", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:30.206", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:30.716", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:31.225", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:31.769", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:32.279", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:32.786", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:33.296", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:33.803", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:34.316", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:34.826", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:35.337", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:35.849", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:36.358", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:36.871", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:37.383", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:37.893", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:38.405", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:38.913", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:39.427", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:39.938", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:40.443", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:40.958", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:41.470", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:41.977", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:42.487", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:42.996", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:43.510", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:44.022", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:44.531", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:45.042", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:45.549", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:46.058", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:46.581", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:47.091", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:47.599", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:48.114", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:48.629", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:49.139", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:49.647", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:50.154", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:50.668", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:51.179", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:51.697", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:52.204", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:52.713", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:53.227", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:53.736", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:54.250", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:54.762", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:55.270", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:55.780", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:56.296", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:56.827", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:57.338", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:57.848", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:58.354", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:58.871", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:59.382", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:38:59.890", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:00.400", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:00.909", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:01.423", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:01.934", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:02.441", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:02.954", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:03.460", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:03.973", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:04.497", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:05.009", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:05.520", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:06.027", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:06.553", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:07.064", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:07.574", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:08.081", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:08.592", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:09.097", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:09.607", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:10.124", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:10.633", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:11.144", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:11.666", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:12.177", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:12.684", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:13.195", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:13.701", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:14.210", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:14.715", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:15.227", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:15.735", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:16.247", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:16.798", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:17.311", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:17.823", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:18.332", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:18.840", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:19.348", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:19.854", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:20.366", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:20.872", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:21.381", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:21.888", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:22.399", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:22.906", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:23.421", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:23.932", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:24.438", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:24.947", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:25.456", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:25.967", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:26.475", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:26.985", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:27.494", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:28.007", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:28.516", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:29.026", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:29.541", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:30.050", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:30.559", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:31.071", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:31.587", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:32.096", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:32.607", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:33.115", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:33.625", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:34.132", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:34.644", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:35.150", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:35.660", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:36.169", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:36.685", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:37.196", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:37.703", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:38.218", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:38.734", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:39.246", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:39.756", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:40.264", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:40.770", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:41.283", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:41.828", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:42.335", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:42.846", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:43.353", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:43.862", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:44.369", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:44.879", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:45.385", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:45.892", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:46.400", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:46.907", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:47.423", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:47.934", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:48.441", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:48.950", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:49.457", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:49.967", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:50.475", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:50.985", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:51.491", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:52.001", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:52.510", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:53.021", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:53.530", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:54.041", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:54.547", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:55.057", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:55.563", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:56.075", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:56.595", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:57.106", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:57.613", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:58.122", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:58.630", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:59.146", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:39:59.659", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:00.175", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:00.681", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:01.196", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:01.727", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:02.241", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:02.748", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:03.259", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:03.766", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:04.277", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:04.785", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:05.296", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:05.807", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:06.318", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:06.829", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:07.336", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:07.847", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:08.353", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:08.867", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:09.374", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:09.883", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:10.390", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:10.901", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:11.409", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:11.919", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:12.427", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:12.935", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:13.441", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:13.950", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:14.457", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:14.967", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:15.476", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:15.992", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:16.502", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:17.012", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:17.521", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:18.029", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:18.538", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:19.046", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:19.557", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:20.063", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:20.574", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:21.082", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:21.599", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:22.110", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:22.617", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:23.127", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:23.633", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:24.145", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:24.657", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:25.163", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:25.671", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:26.180", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:26.697", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:27.205", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:27.713", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:28.223", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:28.731", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:29.237", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:29.750", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:30.261", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:30.768", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:31.281", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:31.818", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:32.334", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:32.846", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:33.354", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:33.864", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:34.370", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:34.878", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:35.386", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:35.897", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:36.404", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:36.917", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:37.424", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:37.934", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:38.440", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:38.955", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:39.463", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:39.973", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:40.485", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:40.993", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:41.506", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:42.012", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:42.522", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:43.028", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:43.539", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:44.047", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:44.558", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:45.068", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:45.576", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:46.085", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:46.599", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:47.110", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:47.618", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:48.128", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:48.635", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:49.144", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:49.651", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:50.161", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:50.670", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:51.179", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:51.698", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:52.216", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:52.728", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:53.235", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:53.746", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:54.255", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:54.762", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:55.270", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:55.781", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:56.309", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:56.836", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:57.347", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:57.853", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:58.364", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:58.872", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:59.381", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:40:59.889", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:00.403", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:00.909", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:01.424", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:01.936", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:02.442", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:02.953", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:03.460", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:03.970", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:04.479", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:04.991", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:05.501", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:06.010", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:06.524", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:07.037", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:07.543", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:08.056", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:08.563", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:09.073", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:09.579", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:10.091", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:10.597", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:11.107", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:11.623", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:12.131", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:12.641", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:13.148", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:13.657", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:14.165", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:14.677", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:15.185", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:15.695", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:16.205", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:16.720", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:17.232", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:17.741", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:18.249", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:18.761", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:19.267", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:19.778", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:20.284", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:20.793", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:21.303", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:21.824", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:22.340", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:22.850", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:23.357", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:23.867", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:24.374", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:24.883", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:25.390", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:25.898", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:26.404", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:26.913", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:27.422", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:27.928", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:28.437", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:28.943", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:29.454", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:29.960", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:30.470", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:30.977", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:31.487", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:31.994", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:32.504", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:33.010", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:33.520", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:34.028", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:34.542", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:35.049", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:35.558", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:36.068", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:36.590", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:37.098", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:37.607", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:38.115", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:38.625", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:39.132", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:39.643", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:40.148", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:40.660", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:41.173", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:41.700", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:42.211", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:42.719", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:43.227", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:43.734", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:44.242", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:44.749", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:45.257", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:45.766", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:46.276", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:46.803", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:47.318", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:47.825", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:48.333", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:48.841", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:49.353", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:49.859", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:50.371", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:50.878", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:51.389", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:51.906", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:52.422", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:52.928", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:53.439", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:53.949", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:54.458", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:54.968", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:55.474", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:55.981", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:56.489", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:56.996", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:57.507", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:58.013", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:58.524", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:59.030", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:41:59.540", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:00.047", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:00.557", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:01.064", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:01.591", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:02.098", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:02.612", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:03.120", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:03.630", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:04.137", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:04.647", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:05.159", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:05.667", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:06.178", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:06.697", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:07.206", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:07.716", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:08.227", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:08.735", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:09.255", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:09.770", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:10.283", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:10.789", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:11.315", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:11.847", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:12.355", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:12.868", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:13.375", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:13.885", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:14.391", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:14.902", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:15.417", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:15.923", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:16.436", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:16.943", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:17.460", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:17.977", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:18.489", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:19.020", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:19.542", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:20.055", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:20.562", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:21.072", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:21.595", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:22.108", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:22.614", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:23.124", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:23.631", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:24.142", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:24.649", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:25.161", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:25.667", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:26.178", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:26.696", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:27.207", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:27.713", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:28.225", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:28.731", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:29.239", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:29.748", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:30.255", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:30.767", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:31.286", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:31.854", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:32.364", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:32.871", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:33.384", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:33.893", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:34.400", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:34.910", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:35.420", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:35.930", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:36.437", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:36.947", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:37.453", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:37.961", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:38.471", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:38.981", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:39.489", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:40.000", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:40.507", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:41.022", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:41.542", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:42.057", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:42.565", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:43.074", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:43.583", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:44.094", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:44.608", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:45.115", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:45.623", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:46.134", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:46.661", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:47.171", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:47.678", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:48.189", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:48.694", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:49.206", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:49.714", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:50.224", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:50.731", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:51.243", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:51.758", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:52.265", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:52.775", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:53.283", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:53.793", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:54.299", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:54.808", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:55.315", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:55.829", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:56.336", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:56.849", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:57.356", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:57.865", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:58.372", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:58.880", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:59.387", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:42:59.899", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:00.406", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:00.915", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:01.421", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:01.932", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:02.439", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:02.950", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:03.457", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:03.971", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:04.482", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:04.989", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:05.497", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:06.007", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:06.516", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:07.024", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:07.536", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:08.042", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:08.553", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:09.059", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:09.569", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:10.075", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:10.585", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:11.093", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:11.611", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:12.120", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:12.629", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:13.140", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:13.649", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:14.157", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:14.664", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:15.178", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:15.684", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:16.193", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:16.709", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:17.217", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:17.731", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:18.242", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:18.750", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:19.260", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:19.767", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:20.282", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:20.789", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:21.301", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:21.854", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:22.366", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:22.874", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:23.385", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:23.891", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:24.406", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:24.918", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:25.435", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:25.941", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:26.453", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:26.961", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:27.475", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:27.991", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:28.503", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:29.010", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:29.521", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:30.039", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:30.551", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:31.058", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:31.587", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:32.094", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:32.604", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:33.111", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:33.622", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:34.130", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:34.640", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:35.148", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:35.657", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:36.170", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:36.696", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:37.207", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:37.713", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:38.224", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:38.732", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:39.241", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:39.748", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:40.258", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:40.766", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:41.293", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:41.814", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:42.332", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:42.844", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:43.352", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:43.865", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:44.372", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:44.884", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:45.395", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:45.902", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:46.418", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:46.929", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:47.438", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:47.952", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:48.459", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:48.969", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:49.478", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:49.988", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:50.498", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:51.004", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:51.512", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:52.020", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:52.530", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:53.038", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:53.545", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:54.056", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:54.564", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:55.072", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:55.578", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:56.088", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:56.610", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:57.124", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:57.630", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:58.141", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:58.648", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:59.159", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:43:59.670", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:00.178", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:00.688", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:01.197", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:01.723", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:02.231", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:02.744", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:03.262", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:03.771", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:04.280", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:04.790", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:05.297", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:05.806", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:06.391", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:06.975", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:07.480", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:07.988", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:08.498", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:09.005", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:09.515", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:10.022", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:10.533", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:11.040", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:11.569", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:12.080", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:12.587", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:13.097", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:13.605", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:14.115", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:14.623", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:15.138", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:15.649", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:16.163", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:16.690", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:17.200", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:17.710", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:18.220", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:18.727", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:19.236", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:19.743", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:20.255", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:20.761", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:21.274", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:21.829", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:22.341", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:22.849", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:23.359", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:23.866", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:24.376", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:24.882", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:25.393", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:25.900", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:26.410", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:26.921", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:27.430", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:27.940", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:28.447", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:28.959", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:29.466", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:29.976", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:30.484", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:30.994", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:31.501", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:32.011", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:32.518", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:33.029", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:33.535", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:34.046", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:34.553", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:35.063", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:35.570", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:36.081", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:36.605", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:37.114", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:37.621", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:38.134", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:38.640", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:39.152", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:39.658", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:40.171", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:40.682", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:41.190", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:41.720", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:42.245", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:42.755", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:43.267", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:43.773", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:44.281", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:44.793", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:45.303", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:45.812", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:46.332", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:46.857", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:47.365", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:47.875", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:48.383", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:48.893", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:49.402", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:49.910", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:50.425", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:50.935", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:51.445", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:51.958", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:52.466", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:52.976", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:53.483", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:53.996", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:54.506", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:55.014", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:55.526", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:56.034", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:56.554", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:57.064", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:57.570", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:58.079", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:58.586", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:59.096", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:44:59.602", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:00.116", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:00.621", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:01.132", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:01.647", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:02.154", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:02.664", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:03.170", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:03.681", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:04.188", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:04.697", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:05.204", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:05.714", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:06.221", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:06.740", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:07.250", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:07.757", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:08.266", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:08.775", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:09.288", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:09.794", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:10.304", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:10.810", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:11.329", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:11.863", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:12.371", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:12.878", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:13.389", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:13.895", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:14.405", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:14.911", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:15.418", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:15.927", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:16.433", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:16.944", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:17.450", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:17.961", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:18.467", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:18.976", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:19.483", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:19.993", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:20.500", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:21.010", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:21.517", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:22.027", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:22.532", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:23.039", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:23.548", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:24.054", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:24.564", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:25.071", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:25.581", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:26.088", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:26.625", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:27.135", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:27.642", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:28.151", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:28.658", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:29.165", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:29.673", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:30.182", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:30.688", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:31.196", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:31.721", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:32.227", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:32.736", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:33.244", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:33.752", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:34.260", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:34.770", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:35.278", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:35.788", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:36.298", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:36.827", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:37.337", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:37.846", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:38.355", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:38.864", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:39.373", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:39.879", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:40.393", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:40.933", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:41.441", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:41.949", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:42.459", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:42.967", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:43.476", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:43.984", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:44.494", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:45.002", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:45.512", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:46.018", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:46.529", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:47.035", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:47.546", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:48.052", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:48.563", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:49.071", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:49.581", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:50.089", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:50.600", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:51.105", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:51.625", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:52.138", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:52.654", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:53.161", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:53.672", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:54.186", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:54.693", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:55.204", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:55.712", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:56.221", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:56.738", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:57.244", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:57.755", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:58.264", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:58.774", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:59.282", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:45:59.791", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:00.298", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:00.807", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:01.335", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:01.861", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:02.370", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:02.878", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:03.389", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:03.897", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:04.406", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:04.914", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:05.425", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:05.932", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:06.447", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:06.960", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:07.468", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:07.978", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:08.485", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:08.997", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:09.503", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:10.013", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:10.520", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:11.030", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:11.536", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:12.045", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:12.555", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:13.064", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:13.571", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:14.081", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:14.588", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:15.097", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:15.603", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:16.113", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:16.624", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:17.135", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:17.641", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:18.150", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:18.657", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:19.168", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:19.675", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:20.185", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:20.693", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:21.215", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:21.742", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:22.275", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:22.810", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:23.327", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:23.850", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:24.362", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:24.876", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:25.400", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:25.925", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:26.433", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:26.959", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:27.466", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:27.978", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:28.491", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:28.998", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:29.513", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:30.026", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:30.532", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:31.041", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:31.550", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:32.067", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:32.579", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:33.087", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:33.612", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:34.151", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:34.666", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:35.179", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:35.688", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:36.208", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:36.748", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:37.255", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:37.767", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:38.281", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:38.787", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:39.304", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:39.815", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:40.322", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:40.834", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:41.372", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:41.940", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:42.457", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:42.974", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:43.486", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:43.994", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:44.506", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:45.017", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:45.524", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:46.033", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:46.545", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:47.058", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:47.572", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:48.079", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:48.589", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:49.102", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:49.612", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:50.121", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:50.628", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:51.139", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:46:51.651", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1934770572", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.ConnectException: Connection refused: connect + at java.base/sun.nio.ch.Net.connect0(Native Method) + at java.base/sun.nio.ch.Net.connect(Net.java:535) + at java.base/sun.nio.ch.Net.connect(Net.java:524) + at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) + at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) + at java.base/java.net.Socket.connect(Socket.java:665) + at java.base/java.net.Socket.connect(Socket.java:603) + at java.base/java.net.Socket.(Socket.java:470) + at java.base/java.net.Socket.(Socket.java:301) + at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) + at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) + ... 14 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 09:57:42.939", + "level": "ERROR", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": " + +*************************** +APPLICATION FAILED TO START +*************************** + +Description: + +Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. + +The injection point has the following annotations: + - @org.springframework.beans.factory.annotation.Autowired(required=true) + + +Action: + +Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. +" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:15:17.258", + "level": "ERROR", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": " + +*************************** +APPLICATION FAILED TO START +*************************** + +Description: + +Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. + +The injection point has the following annotations: + - @org.springframework.beans.factory.annotation.Autowired(required=true) + + +Action: + +Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. +" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:18:48.159", + "level": "ERROR", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": " + +*************************** +APPLICATION FAILED TO START +*************************** + +Description: + +Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. + +The injection point has the following annotations: + - @org.springframework.beans.factory.annotation.Autowired(required=true) + + +Action: + +Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. +" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:19:36.488", + "level": "ERROR", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": " + +*************************** +APPLICATION FAILED TO START +*************************** + +Description: + +Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. + +The injection point has the following annotations: + - @org.springframework.beans.factory.annotation.Autowired(required=true) + + +Action: + +Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. +" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:35:25.058", + "level": "ERROR", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": " + +*************************** +APPLICATION FAILED TO START +*************************** + +Description: + +Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. + +The injection point has the following annotations: + - @org.springframework.beans.factory.annotation.Autowired(required=true) + + +Action: + +Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. +" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:55:25.101", + "level": "ERROR", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": " + +*************************** +APPLICATION FAILED TO START +*************************** + +Description: + +Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. + +The injection point has the following annotations: + - @org.springframework.beans.factory.annotation.Autowired(required=true) + + +Action: + +Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. +" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 10:57:08.929", + "level": "ERROR", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": " + +*************************** +APPLICATION FAILED TO START +*************************** + +Description: + +Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. + +The injection point has the following annotations: + - @org.springframework.beans.factory.annotation.Autowired(required=true) + + +Action: + +Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. +" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 11:17:18.002", + "level": "ERROR", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": " + +*************************** +APPLICATION FAILED TO START +*************************** + +Description: + +Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. + +The injection point has the following annotations: + - @org.springframework.beans.factory.annotation.Autowired(required=true) + + +Action: + +Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. +" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:11:16.987", + "level": "ERROR", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": " + +*************************** +APPLICATION FAILED TO START +*************************** + +Description: + +Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. + +The injection point has the following annotations: + - @org.springframework.beans.factory.annotation.Autowired(required=true) + + +Action: + +Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. +" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 12:20:31.937", + "level": "ERROR", + "thread": "main", + "class": "o.s.b.d.LoggingFailureAnalysisReporter", + "message": " + +*************************** +APPLICATION FAILED TO START +*************************** + +Description: + +Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. + +The injection point has the following annotations: + - @org.springframework.beans.factory.annotation.Autowired(required=true) + + +Action: + +Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. +" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:12:23.855", + "level": "ERROR", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Application run failed" } + +org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) +Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + ... 19 common frames omitted +Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) + at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) + ... 31 common frames omitted +Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_TRIGGERS' doesn't exist + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) + at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) + at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) + at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) + at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) + ... 39 common frames omitted +Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_TRIGGERS' doesn't exist + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) + at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) + at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) + at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) + at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) + at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) + at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1761) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) + ... 46 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:15:51.014", + "level": "ERROR", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Application run failed" } + +org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) +Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + ... 19 common frames omitted +Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) + at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) + ... 31 common frames omitted +Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_TRIGGERS' doesn't exist + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) + at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) + at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) + at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) + at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) + ... 39 common frames omitted +Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_TRIGGERS' doesn't exist + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) + at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) + at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) + at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) + at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) + at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) + at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1761) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) + ... 46 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:22:39.924", + "level": "ERROR", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Application run failed" } + +org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) +Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + ... 19 common frames omitted +Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) + at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) + ... 31 common frames omitted +Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) + at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) + at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) + at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) + at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) + ... 39 common frames omitted +Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) + at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) + at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) + at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) + at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) + at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) + at org.quartz.impl.jdbcjobstore.CronTriggerPersistenceDelegate.loadExtendedTriggerProperties(CronTriggerPersistenceDelegate.java:93) + at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1819) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) + ... 46 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:30:03.390", + "level": "ERROR", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Application run failed" } + +org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) +Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + ... 19 common frames omitted +Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) + at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) + ... 31 common frames omitted +Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) + at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) + at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) + at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) + at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) + ... 39 common frames omitted +Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) + at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) + at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) + at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) + at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) + at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) + at org.quartz.impl.jdbcjobstore.CronTriggerPersistenceDelegate.loadExtendedTriggerProperties(CronTriggerPersistenceDelegate.java:93) + at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1819) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) + ... 46 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:44:20.884", + "level": "ERROR", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Application run failed" } + +org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) +Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + ... 19 common frames omitted +Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) + at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) + ... 31 common frames omitted +Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) + at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) + at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) + at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) + at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) + ... 39 common frames omitted +Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) + at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) + at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) + at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) + at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) + at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) + at org.quartz.impl.jdbcjobstore.CronTriggerPersistenceDelegate.loadExtendedTriggerProperties(CronTriggerPersistenceDelegate.java:93) + at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1819) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) + ... 46 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 14:54:54.161", + "level": "ERROR", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Application run failed" } + +org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) +Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + ... 19 common frames omitted +Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) + at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) + ... 31 common frames omitted +Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) + at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) + at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) + at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) + at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) + ... 39 common frames omitted +Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) + at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) + at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) + at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) + at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) + at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) + at org.quartz.impl.jdbcjobstore.CronTriggerPersistenceDelegate.loadExtendedTriggerProperties(CronTriggerPersistenceDelegate.java:93) + at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1819) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) + ... 46 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:04:49.366", + "level": "ERROR", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Application run failed" } + +org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 创建定时任务失败 + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) +Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 创建定时任务失败 + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + ... 19 common frames omitted +Caused by: java.lang.RuntimeException: 创建定时任务失败 + at com.zbkj.admin.quartz.ScheduleManager.createScheduleJob(ScheduleManager.java:73) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:54) + at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) + ... 31 common frames omitted +Caused by: org.quartz.impl.jdbcjobstore.LockException: Failure obtaining db row lock: Table 'crmeb.QRTZ_LOCKS' doesn't exist + at org.quartz.impl.jdbcjobstore.StdRowLockSemaphore.executeSQL(StdRowLockSemaphore.java:184) + at org.quartz.impl.jdbcjobstore.DBSemaphore.obtainLock(DBSemaphore.java:113) + at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:238) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.storeJobAndTrigger(JobStoreSupport.java:1063) + at org.quartz.core.QuartzScheduler.scheduleJob(QuartzScheduler.java:855) + at org.quartz.impl.StdScheduler.scheduleJob(StdScheduler.java:249) + at com.zbkj.admin.quartz.ScheduleManager.createScheduleJob(ScheduleManager.java:66) + ... 39 common frames omitted +Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_LOCKS' doesn't exist + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) + at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) + at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) + at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) + at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) + at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) + at org.quartz.impl.jdbcjobstore.StdRowLockSemaphore.executeSQL(StdRowLockSemaphore.java:123) + ... 45 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:12:16.062", + "level": "ERROR", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Application run failed" } + +org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) +Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + ... 19 common frames omitted +Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) + at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) + ... 31 common frames omitted +Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) + at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) + at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) + at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) + at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) + at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) + ... 39 common frames omitted +Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) + at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) + at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) + at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) + at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) + at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) + at org.quartz.impl.jdbcjobstore.CronTriggerPersistenceDelegate.loadExtendedTriggerProperties(CronTriggerPersistenceDelegate.java:93) + at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1819) + at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) + ... 46 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:50.470", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:50.503", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:51.035", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:51.572", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:52.117", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:52.646", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:53.174", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:53.702", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:54.222", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:54.741", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:55.268", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:55.787", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:56.308", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:56.834", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:57.360", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:57.880", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:58.396", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:58.917", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:59.446", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:24:59.975", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:00.498", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:01.016", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:01.542", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:02.062", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:02.581", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:03.099", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:03.632", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:04.152", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:04.672", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:05.195", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:05.737", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:06.352", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:06.908", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:07.510", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:08.039", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:08.559", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:09.080", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:09.610", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:10.169", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:10.728", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:11.278", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:11.799", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:12.326", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:12.846", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:13.366", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:13.887", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:14.412", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:14.934", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:15.477", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:16.003", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:16.529", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:17.053", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:17.584", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:18.102", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:18.634", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:19.164", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:19.688", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:20.210", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:20.739", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:21.260", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:21.786", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:22.307", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:22.838", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:23.431", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:23.978", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:24.512", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:25.039", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:25.585", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:26.105", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:26.634", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:27.157", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:27.699", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:28.248", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:28.809", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:29.333", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:29.866", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:30.393", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:30.941", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:31.482", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:32.004", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:32.524", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:33.051", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:33.587", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:34.111", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:34.640", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:35.165", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:35.704", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:36.231", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:36.753", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:37.281", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:37.807", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:38.329", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:38.848", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:39.375", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:39.905", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:40.433", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:40.960", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:41.495", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:42.016", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:42.538", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:43.066", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:43.600", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:44.122", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:44.647", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:45.173", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:45.720", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:46.261", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:46.786", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:47.317", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:47.837", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:48.366", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:48.889", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:49.412", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:49.939", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:50.471", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:50.992", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:51.536", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:52.063", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:52.585", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:53.114", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:53.645", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:54.174", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:54.696", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:55.224", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:55.791", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:56.314", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:56.841", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:57.373", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:57.894", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1657509754", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } + +com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) + at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) + at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) + at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) + at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) + at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) + at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) + at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) + at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:25:59.670", + "level": "ERROR", + "thread": "main", + "class": "o.springframework.boot.SpringApplication", + "message": "Application run failed" } + +org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is org.springframework.jdbc.BadSqlGrammarException: +### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist +### The error may exist in com/zbkj/admin/dao/ScheduleJobDao.java (best guess) +### The error may involve defaultParameterMap +### The error occurred while setting parameters +### SQL: SELECT job_id,bean_name,method_name,params,cron_expression,status,remark,is_delte,create_time FROM eb_schedule_job WHERE (is_delte = ?) ORDER BY job_id DESC +### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist +; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) + at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) + at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) + at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) + at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) + at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) + at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) + at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) + at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) +Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is org.springframework.jdbc.BadSqlGrammarException: +### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist +### The error may exist in com/zbkj/admin/dao/ScheduleJobDao.java (best guess) +### The error may involve defaultParameterMap +### The error occurred while setting parameters +### SQL: SELECT job_id,bean_name,method_name,params,cron_expression,status,remark,is_delte,create_time FROM eb_schedule_job WHERE (is_delte = ?) ORDER BY job_id DESC +### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist +; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) + at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) + at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) + at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) + at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) + at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) + at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) + at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) + at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) + ... 19 common frames omitted +Caused by: org.springframework.jdbc.BadSqlGrammarException: +### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist +### The error may exist in com/zbkj/admin/dao/ScheduleJobDao.java (best guess) +### The error may involve defaultParameterMap +### The error occurred while setting parameters +### SQL: SELECT job_id,bean_name,method_name,params,cron_expression,status,remark,is_delte,create_time FROM eb_schedule_job WHERE (is_delte = ?) ORDER BY job_id DESC +### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist +; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist + at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:235) + at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72) + at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:88) + at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:440) + at jdk.proxy2/jdk.proxy2.$Proxy143.selectList(Unknown Source) + at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:223) + at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.executeForMany(MybatisMapperMethod.java:177) + at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.execute(MybatisMapperMethod.java:78) + at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:96) + at jdk.proxy2/jdk.proxy2.$Proxy279.selectList(Unknown Source) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.getAll(ScheduleJobServiceImpl.java:73) + at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) + at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) + ... 31 common frames omitted +Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.Util.getInstance(Util.java:386) + at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) + at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) + at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) + at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) + at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) + at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1379) + at com.alibaba.druid.pool.DruidPooledPreparedStatement.execute(DruidPooledPreparedStatement.java:497) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:59) + at jdk.proxy3/jdk.proxy3.$Proxy285.execute(Unknown Source) + at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:64) + at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79) + at com.baomidou.mybatisplus.core.executor.MybatisSimpleExecutor.doQuery(MybatisSimpleExecutor.java:67) + at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) + at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) + at com.baomidou.mybatisplus.core.executor.MybatisCachingExecutor.query(MybatisCachingExecutor.java:163) + at com.baomidou.mybatisplus.core.executor.MybatisCachingExecutor.query(MybatisCachingExecutor.java:90) + at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147) + at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:426) + ... 44 common frames omitted +{ + "app": "Crmeb", + "timestamp":"2025-08-19 15:28:57.217", + "level": "ERROR", + "thread": "task-executor-14", + "class": "c.z.s.service.impl.OrderTaskServiceImpl", + "message": "订单自动完成：订单记录最后一条不是收货状态，orderId = 35" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 16:00:00.361", + "level": "ERROR", + "thread": "task-executor-15", + "class": "c.z.s.service.impl.OrderTaskServiceImpl", + "message": "订单自动完成：订单记录最后一条不是收货状态，orderId = 35" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 17:00:01.576", + "level": "ERROR", + "thread": "task-executor-7", + "class": "c.z.s.service.impl.OrderTaskServiceImpl", + "message": "订单自动完成：订单记录最后一条不是收货状态，orderId = 35" } + +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:01:58.893", + "level": "ERROR", + "thread": "http-nio-20500-exec-25", + "class": "c.z.s.exception.GlobalExceptionHandler", + "message": "捕获到异常：" } + +com.zbkj.common.exception.CrmebException: 账号或密码不正确 + at com.zbkj.admin.service.impl.AdminLoginServiceImpl.login(AdminLoginServiceImpl.java:120) + at com.zbkj.admin.controller.AdminLoginController.SystemAdminLogin(AdminLoginController.java:50) + at com.zbkj.admin.controller.AdminLoginController$$FastClassBySpringCGLIB$$fa9c6d8f.invoke() + at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) + at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:687) + at com.zbkj.admin.controller.AdminLoginController$$EnhancerBySpringCGLIB$$f41a5e1a.SystemAdminLogin() + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) + at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) + at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) + at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) + at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) + at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) + at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) + at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) + at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) + at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) + at javax.servlet.http.HttpServlet.service(HttpServlet.java:665) + at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) + at javax.servlet.http.HttpServlet.service(HttpServlet.java:750) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at com.zbkj.admin.filter.ResponseFilter.doFilter(ResponseFilter.java:49) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) + at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) + at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at com.zbkj.admin.filter.JwtAuthenticationTokenFilter.doFilterInternal(JwtAuthenticationTokenFilter.java:37) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) + at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) + at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) + at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) + at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:109) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) + at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) + at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) + at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) + at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) + at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) + at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) + at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) + at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) + at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) + at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594) + at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) + at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095) + at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619) + at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) + at java.base/java.lang.Thread.run(Thread.java:1447) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:02:31.263", + "level": "ERROR", + "thread": "http-nio-20500-exec-30", + "class": "c.z.s.exception.GlobalExceptionHandler", + "message": "捕获到异常：" } + +com.zbkj.common.exception.CrmebException: 账号或密码不正确 + at com.zbkj.admin.service.impl.AdminLoginServiceImpl.login(AdminLoginServiceImpl.java:120) + at com.zbkj.admin.controller.AdminLoginController.SystemAdminLogin(AdminLoginController.java:50) + at com.zbkj.admin.controller.AdminLoginController$$FastClassBySpringCGLIB$$fa9c6d8f.invoke() + at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) + at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:687) + at com.zbkj.admin.controller.AdminLoginController$$EnhancerBySpringCGLIB$$f41a5e1a.SystemAdminLogin() + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) + at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) + at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) + at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) + at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) + at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) + at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) + at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) + at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) + at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) + at javax.servlet.http.HttpServlet.service(HttpServlet.java:665) + at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) + at javax.servlet.http.HttpServlet.service(HttpServlet.java:750) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at com.zbkj.admin.filter.ResponseFilter.doFilter(ResponseFilter.java:49) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) + at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) + at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at com.zbkj.admin.filter.JwtAuthenticationTokenFilter.doFilterInternal(JwtAuthenticationTokenFilter.java:37) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) + at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) + at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) + at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) + at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:109) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) + at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) + at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) + at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) + at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) + at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) + at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) + at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) + at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) + at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) + at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594) + at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) + at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095) + at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619) + at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) + at java.base/java.lang.Thread.run(Thread.java:1447) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:44.389", + "level": "ERROR", + "thread": "http-nio-20500-exec-29", + "class": "c.z.s.exception.GlobalExceptionHandler", + "message": "捕获到异常：" } + +org.springframework.security.access.AccessDeniedException: 不允许访问 + at org.springframework.security.access.vote.AffirmativeBased.decide(AffirmativeBased.java:84) + at org.springframework.security.access.intercept.AbstractSecurityInterceptor.beforeInvocation(AbstractSecurityInterceptor.java:233) + at org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:65) + at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) + at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) + at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691) + at com.zbkj.admin.controller.UserStatisticsController$$EnhancerBySpringCGLIB$$62eefbf6.getOverview() + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) + at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) + at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) + at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) + at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) + at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) + at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) + at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) + at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) + at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) + at javax.servlet.http.HttpServlet.service(HttpServlet.java:645) + at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) + at javax.servlet.http.HttpServlet.service(HttpServlet.java:750) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at com.zbkj.admin.filter.ResponseFilter.doFilter(ResponseFilter.java:49) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) + at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) + at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at com.zbkj.admin.filter.JwtAuthenticationTokenFilter.doFilterInternal(JwtAuthenticationTokenFilter.java:37) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) + at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) + at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) + at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) + at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:109) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) + at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) + at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) + at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) + at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) + at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) + at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) + at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) + at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) + at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) + at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594) + at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) + at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095) + at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619) + at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) + at java.base/java.lang.Thread.run(Thread.java:1447) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:44.636", + "level": "ERROR", + "thread": "http-nio-20500-exec-1", + "class": "c.z.s.exception.GlobalExceptionHandler", + "message": "捕获到异常：" } + +org.springframework.security.access.AccessDeniedException: 不允许访问 + at org.springframework.security.access.vote.AffirmativeBased.decide(AffirmativeBased.java:84) + at org.springframework.security.access.intercept.AbstractSecurityInterceptor.beforeInvocation(AbstractSecurityInterceptor.java:233) + at org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:65) + at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) + at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) + at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691) + at com.zbkj.admin.controller.UserStatisticsController$$EnhancerBySpringCGLIB$$62eefbf6.getChannelData() + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) + at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) + at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) + at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) + at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) + at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) + at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) + at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) + at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) + at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) + at javax.servlet.http.HttpServlet.service(HttpServlet.java:645) + at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) + at javax.servlet.http.HttpServlet.service(HttpServlet.java:750) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at com.zbkj.admin.filter.ResponseFilter.doFilter(ResponseFilter.java:49) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) + at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) + at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at com.zbkj.admin.filter.JwtAuthenticationTokenFilter.doFilterInternal(JwtAuthenticationTokenFilter.java:37) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) + at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) + at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) + at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) + at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) + at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:109) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) + at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) + at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) + at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) + at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) + at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) + at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) + at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) + at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) + at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) + at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) + at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) + at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) + at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) + at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594) + at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) + at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095) + at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619) + at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) + at java.base/java.lang.Thread.run(Thread.java:1447) +{ + "app": "Crmeb", + "timestamp":"2025-08-19 18:03:46.845", + "level": "ERROR", + "thread": "Druid-ConnectionPool-Create-1416013849", + "class": "com.alibaba.druid.pool.DruidDataSource", + "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 0, state 08S01" } + +com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure + +The last packet successfully received from the server was 1,011 milliseconds ago. The last packet sent successfully to the server was 1,011 milliseconds ago. + at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) + at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) + at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) + at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) + at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) + at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3603) + at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3492) + at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4043) + at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) + at com.mysql.jdbc.ConnectionImpl.pingInternal(ConnectionImpl.java:4356) + at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) + at java.base/java.lang.reflect.Method.invoke(Method.java:565) + at com.alibaba.druid.pool.vendor.MySqlValidConnectionChecker.isValidConnection(MySqlValidConnectionChecker.java:107) + at com.alibaba.druid.pool.DruidAbstractDataSource.validateConnection(DruidAbstractDataSource.java:1386) + at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1719) + at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) +Caused by: java.net.SocketTimeoutException: Read timed out + at java.base/sun.nio.ch.NioSocketImpl.timedRead(NioSocketImpl.java:277) + at java.base/sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:303) + at java.base/sun.nio.ch.NioSocketImpl.read(NioSocketImpl.java:345) + at java.base/sun.nio.ch.NioSocketImpl$1.read(NioSocketImpl.java:790) + at java.base/java.net.Socket$SocketInputStream.implRead(Socket.java:983) + at java.base/java.net.Socket$SocketInputStream.read(Socket.java:970) + at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:114) + at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:161) + at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:189) + at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3049) + at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3503) + ... 10 common frames omitted diff --git a/crmeb_admin_log/log_info.log b/crmeb_admin_log/log_info.log new file mode 100644 index 00000000..e69de29b diff --git a/crmeb_admin_log/log_warn.log b/crmeb_admin_log/log_warn.log new file mode 100644 index 00000000..e69de29b From 22b1d7f39e16d47e4c4c5298c257728e81514c8f Mon Sep 17 00:00:00 2001 From: KEN Date: Wed, 20 Aug 2025 20:35:13 +0800 Subject: [PATCH 2/3] =?UTF-8?q?=E9=80=82=E9=85=8D=E7=94=A8=E6=88=B7?= =?UTF-8?q?=E7=95=8C=E9=9D=A2=E5=8F=AF=E8=BF=90=E8=A1=8C?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- admin/.env.development | 2 +- app/config/app.js | 4 ++-- app/package-lock.json | 2 +- .../src/main/resources/application-dev.yml | 2 +- .../src/main/resources/application-dev.yml | 12 ++++++------ .../crmeb-front/src/main/resources/application.yml | 14 +++++++------- 6 files changed, 18 insertions(+), 18 deletions(-) diff --git a/admin/.env.development b/admin/.env.development index a83c6ba0..924e9685 100644 --- a/admin/.env.development +++ b/admin/.env.development @@ -4,7 +4,7 @@ ENV = 'development' # base api # VUE_APP_BASE_API = '/dev-api' # VUE_APP_BASE_API = 'https://api.java.crmeb.net' -VUE_APP_BASE_API = 'http://127.0.0.1:20500' +VUE_APP_BASE_API = 'http://127.0.0.1:8080' # vue-cli uses the VUE_CLI_BABEL_TRANSPILE_MODULES environment variable, # to control whether the babel-plugin-dynamic-import-node plugin is enabled. diff --git a/app/config/app.js b/app/config/app.js index b5ffd309..ca64bece 100644 --- a/app/config/app.js +++ b/app/config/app.js @@ -8,7 +8,7 @@ // | Author: CRMEB Team // +---------------------------------------------------------------------- //移动端商城API -let domain = 'http://192.168.31.35:2511' +let domain = 'http://127.0.0.1:8081' // let domain = 'https://apif.java.crmeb.net' module.exports = { @@ -17,7 +17,7 @@ module.exports = { // HTTP_REQUEST_URL:'', HTTP_REQUEST_URL: domain, // H5商城地址 - HTTP_H5_URL: 'http://java.crmeb.net', + HTTP_H5_URL: domain, // #endif // #ifdef H5 HTTP_REQUEST_URL:domain, diff --git a/app/package-lock.json b/app/package-lock.json index bda726cf..ef84a6d2 100644 --- a/app/package-lock.json +++ b/app/package-lock.json @@ -1,5 +1,5 @@ { - "name": "single_uniapp", + "name": "app", "lockfileVersion": 2, "requires": true, "packages": { diff --git a/crmeb/crmeb-admin/src/main/resources/application-dev.yml b/crmeb/crmeb-admin/src/main/resources/application-dev.yml index f84dc31d..54054a36 100644 --- a/crmeb/crmeb-admin/src/main/resources/application-dev.yml +++ b/crmeb/crmeb-admin/src/main/resources/application-dev.yml @@ -12,7 +12,7 @@ crmeb: demoSite: true # 是否演示站点 所有手机号码都会掩码 server: - port: 20500 + port: 8080 spring: profiles: diff --git a/crmeb/crmeb-front/src/main/resources/application-dev.yml b/crmeb/crmeb-front/src/main/resources/application-dev.yml index 81c5afa2..d5f0d273 100644 --- a/crmeb/crmeb-front/src/main/resources/application-dev.yml +++ b/crmeb/crmeb-front/src/main/resources/application-dev.yml @@ -5,7 +5,7 @@ crmeb: asyncConfig: false #是否同步config表数据到redis server: - port: 20510 + port: 8081 spring: profiles: @@ -15,13 +15,13 @@ spring: datasource: type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.mysql.jdbc.Driver - url: jdbc:mysql://127.0.0.1:3306/single_open?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8 - username: single_open - password: 111111 + url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8 + username: root + password: 123456 redis: - host: 127.0.0.1 #地址 + host: 192.168.33.10 #地址 port: 6379 #端口 - password: 111111 + password: 123456 timeout: 10000 # 连接超时时间（毫秒） database: 6 #默认数据库 jedis: diff --git a/crmeb/crmeb-front/src/main/resources/application.yml b/crmeb/crmeb-front/src/main/resources/application.yml index c5f4d356..5af6c6b7 100644 --- a/crmeb/crmeb-front/src/main/resources/application.yml +++ b/crmeb/crmeb-front/src/main/resources/application.yml @@ -33,7 +33,7 @@ spring: profiles: # 配置的环境 # active: #spring.profiles.active# - active: + active: dev servlet: multipart: max-file-size: 50MB #设置单个文件大小 @@ -48,13 +48,13 @@ spring: datasource: type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.mysql.jdbc.Driver - url: jdbc:mysql://127.0.0.1:3306/single_open?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8 - username: single_open - password: 111111 + url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8 + username: root + password: 123456 redis: - host: 127.0.0.1 #地址 - port: 6379 #端口 - password: 111111 + host: 192.168.33.10 + port: 6379 + password: 123456 timeout: 30000 # 连接超时时间（毫秒） database: 6 #默认数据库 jedis: From c60d5bf1270b4fcbe892adbde297105019ca2012 Mon Sep 17 00:00:00 2001 From: tbkken <49553059+tbkken@users.noreply.github.com> Date: Wed, 20 Aug 2025 22:58:09 +0800 Subject: [PATCH 3/3] Delete crmeb_admin_log directory --- crmeb_admin_log/log_debug.log | 7610 --- crmeb_admin_log/log_error.log | 102369 ------------------------------- crmeb_admin_log/log_info.log | 0 crmeb_admin_log/log_warn.log | 0 4 files changed, 109979 deletions(-) delete mode 100644 crmeb_admin_log/log_debug.log delete mode 100644 crmeb_admin_log/log_error.log delete mode 100644 crmeb_admin_log/log_info.log delete mode 100644 crmeb_admin_log/log_warn.log diff --git a/crmeb_admin_log/log_debug.log b/crmeb_admin_log/log_debug.log deleted file mode 100644 index 1cdc4249..00000000 --- a/crmeb_admin_log/log_debug.log +++ /dev/null @@ -1,7610 +0,0 @@ -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:27:44.761", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:27:45.206", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:27:45.414", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:27:45.420", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@1efe439d" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:27:59.860", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:27:59.864", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:27:59.867", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:00.912", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:03.136", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:03.139", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:03.238", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:03.242", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:03.249", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:03.255", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:03.265", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:03.272", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:11.812", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:12.339", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:12.780", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:12.792", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@78d6692f" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:29.281", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:29.291", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:29.377", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:31.305", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:35.100", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:35.161", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:35.392", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:35.411", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:35.510", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:35.611", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:35.634", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:56:35.651", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:57:41.511", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:57:42.389", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": "Application failed to start due to an exception" } - -org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} - at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:41) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:29.469", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:29.801", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:30.033", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:30.037", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@39a2bb97" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:43.892", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:43.908", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:43.977", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:45.349", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:47.981", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:47.995", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:48.247", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:48.260", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:48.343", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:48.360", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:48.377", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:14:48.494", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:15:16.615", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:15:17.186", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": "Application failed to start due to an exception" } - -org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} - at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:41) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:20.557", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:20.819", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:20.949", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:20.952", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@1b84f475" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:29.910", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:29.912", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:29.915", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:31.050", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:32.972", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:32.978", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:33.100", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:33.119", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:33.129", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:33.183", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:33.285", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:33.306", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:47.409", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:47.978", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": "Application failed to start due to an exception" } - -org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} - at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:41) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:09.101", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:09.402", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:09.541", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:09.543", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@38089a5a" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:19.714", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:19.717", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:19.728", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:20.936", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:22.796", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:22.799", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:22.927", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:22.935", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:22.950", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:22.997", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:23.001", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:23.013", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:35.818", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:36.292", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": "Application failed to start due to an exception" } - -org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} - at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:41) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:34:51.429", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:34:51.846", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:34:52.005", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:34:52.012", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@64a40280" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:02.629", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:02.646", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:02.724", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:04.663", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:06.758", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:06.764", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:06.915", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:06.921", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:06.936", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:06.951", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:06.989", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:07.000", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:23.942", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:24.825", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": "Application failed to start due to an exception" } - -org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} - at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:46) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:00.183", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:00.454", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:00.614", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:00.617", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@76a2ddf3" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:08.825", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:08.889", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:09.040", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:10.141", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:11.688", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:11.691", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:11.784", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:11.788", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:11.792", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:11.795", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:11.801", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:11.809", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:24.441", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:24.970", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": "Application failed to start due to an exception" } - -org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} - at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:46) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:43.303", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:43.721", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:43.966", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:43.970", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@38aa816f" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:52.546", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:52.553", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:52.559", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:53.620", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:55.459", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:55.462", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:55.554", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:55.559", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:55.564", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:55.566", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:55.574", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:56:55.583", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:57:07.982", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:57:08.719", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": "Application failed to start due to an exception" } - -org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} - at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:52) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:16:54.385", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:16:54.656", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:16:54.815", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:16:54.818", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4f5991f6" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:02.735", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:02.739", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:02.743", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:03.977", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:05.560", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:05.565", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:05.641", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:05.643", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:05.649", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:05.654", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:05.661", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:05.663", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:17.306", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:17.794", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": "Application failed to start due to an exception" } - -org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} - at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:52) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:39.613", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:40.311", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:40.842", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:40.893", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@6aecbb8d" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:53.648", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:53.653", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:53.674", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:55.505", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:58.587", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:58.599", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:58.752", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:58.809", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:58.840", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:58.857", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:58.874", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:10:58.911", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:11:16.344", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:11:16.939", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": "Application failed to start due to an exception" } - -org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} - at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:19:42.276", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:19:42.862", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:19:43.037", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:19:43.042", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4da602fc" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:19:59.873", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:19:59.881", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:19:59.915", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:02.733", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:07.853", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:07.930", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:08.173", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:08.205", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:08.270", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:08.303", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:08.403", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:08.436", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:31.281", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:31.850", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": "Application failed to start due to an exception" } - -org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.zbkj.common.utils.CrmebUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} - at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1700) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1256) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:11:48.094", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:11:48.730", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:11:49.131", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:11:49.152", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@56bca85b" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:01.502", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:01.508", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:01.513", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:03.048", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:05.783", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:05.788", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:05.866", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:05.869", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:05.875", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:05.882", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:05.888", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:05.901", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:23.781", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:13.341", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:13.863", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:14.483", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:14.499", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:14.506", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:14.521", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:14.542", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@dcfda20" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:27.334", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:27.358", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:27.367", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:28.738", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:31.845", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:31.854", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:31.979", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:31.984", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:31.989", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:31.991", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:32.007", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:32.009", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:50.908", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:21:56.611", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:21:57.384", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:21:57.678", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:21:57.682", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:21:57.686", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:21:57.689", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:21:57.694", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@285c08c8" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:12.177", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:12.183", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:12.198", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:13.997", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:16.971", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:16.983", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:17.186", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:17.199", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:17.234", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:17.240", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:17.282", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:17.303", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:39.872", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:05.325", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:06.109", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:06.394", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:06.416", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:06.433", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:06.677", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:06.761", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@27953a83" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:25.924", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:25.930", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:26.012", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:28.457", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:34.980", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:35.083", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:35.448", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:35.472", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:35.498", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:35.520", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:35.530", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:29:35.535", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:30:03.291", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:40:14.648", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:40:17.088", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:40:18.072", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:40:18.143", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:40:18.255", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:40:18.296", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:40:18.397", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@53812a9b" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:40:53.825", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:40:53.853", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:40:54.018", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:40:57.790", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:41:03.582", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:41:03.718", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:41:03.994", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:41:04.021", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:41:04.038", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:41:04.059", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:41:04.108", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:41:04.121", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:44:20.768", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:01.745", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:03.407", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:03.676", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:03.680", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:03.684", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:03.687", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:03.692", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@2b5825fa" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:29.706", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:29.728", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:29.757", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:32.746", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:37.686", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:37.783", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:38.003", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:38.013", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:38.017", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:38.026", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:38.032", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:45:38.035", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:54:54.108", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:32.243", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:32.869", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:33.029", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:33.031", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:33.037", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:33.040", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:33.043", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@56bca85b" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:45.240", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:45.268", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:45.273", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:47.269", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:49.868", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:49.889", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:50.140", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:50.189", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:50.252", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:50.272", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:50.357", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:02:50.443", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:04:49.327", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:10:49.388", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:10:49.709", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:10:49.917", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:10:49.918", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:10:49.920", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:10:49.924", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:10:49.949", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@749c877b" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:02.232", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:02.239", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:02.244", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:03.562", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:06.072", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:06.132", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:06.427", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:06.431", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:06.467", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:06.495", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:06.548", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:11:06.592", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:12:15.977", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:11.860", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:12.247", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:12.434", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:12.435", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:12.437", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:12.439", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:12.442", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@a4b2d8f" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:25.544", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:25.559", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:25.613", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:27.381", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:29.724", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:29.731", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:29.833", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:29.837", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:29.845", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:29.849", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:29.852", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:29.867", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:59.572", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application failed to start with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:09.791", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:10.243", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:10.601", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:10.614", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:10.627", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:10.629", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:10.652", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4fc5e095" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:29.849", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:29.860", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:29.873", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:31.875", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:35.912", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:35.944", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:36.212", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:36.304", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:36.431", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:36.491", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:36.525", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:27:36.611", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:28:27.310", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "331 mappings in 'requestMappingHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:28:28.985", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", - "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:28:29.056", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", - "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:28:29.437", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:28:29.555", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.358", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4fc5e095, started on Tue Aug 19 15:27:10 CST 2025" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.461", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Beans' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.490", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Caches' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.494", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Health' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.499", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Info' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.514", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Conditions' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.542", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Configprops' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.547", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Env' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.549", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Loggers' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.556", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Threaddump' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.557", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Metrics' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.559", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Scheduledtasks' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:12:39.563", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Mappings' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:37.121", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:37.432", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:37.635", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:37.643", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:37.654", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:37.662", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:37.686", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@6f8f9349" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:46.606", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:46.609", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:46.611", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:47.637", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:49.327", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:49.332", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:49.401", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:49.403", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:49.407", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:49.412", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:49.419", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:13:49.422", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:14:05.041", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "331 mappings in 'requestMappingHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:14:05.952", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", - "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:14:05.975", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", - "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:14:06.140", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:14:06.171", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:26.969", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:27.186", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:27.445", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:27.448", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:27.450", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:27.468", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:27.484", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@22b53226" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:37.115", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:37.118", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:37.121", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:38.772", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:40.841", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:40.960", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:41.071", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:41.106", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:41.131", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:41.171", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:41.200", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:20:41.232", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:21:07.372", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "331 mappings in 'requestMappingHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:21:09.174", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", - "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:21:09.213", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", - "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:21:09.387", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:21:09.415", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.325", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@22b53226, started on Tue Aug 19 17:20:27 CST 2025" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.354", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Beans' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.355", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Caches' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.357", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Health' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.358", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Info' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.365", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Conditions' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.366", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Configprops' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.369", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Env' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.370", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Loggers' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.372", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Threaddump' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.374", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Metrics' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.375", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Scheduledtasks' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:26.379", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Mappings' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:48.465", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:48.743", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:48.876", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:48.877", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:48.879", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:48.881", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:48.885", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@cb191ca" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:57.744", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:57.746", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:57.750", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:27:58.770", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:00.208", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:00.212", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:00.273", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:00.276", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:00.278", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:00.281", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:00.287", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:00.295", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:15.930", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "331 mappings in 'requestMappingHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:17.434", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", - "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:17.480", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", - "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:17.671", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:28:17.708", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.348", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@cb191ca, started on Tue Aug 19 17:27:48 CST 2025" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.411", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Beans' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.414", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Caches' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.423", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Health' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.430", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Info' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.441", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Conditions' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.445", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Configprops' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.456", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Env' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.459", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Loggers' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.461", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Threaddump' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.468", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Metrics' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.475", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Scheduledtasks' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:21.479", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Mappings' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:34.840", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:35.285", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:35.505", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:35.507", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:35.509", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:35.514", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:35.516", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@505a9d7c" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:51.825", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:51.827", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:51.830", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:54.108", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:57.264", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:57.273", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:57.401", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:57.407", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:57.413", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:57.422", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:57.434", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:35:57.449", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:36:22.225", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "331 mappings in 'requestMappingHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:36:24.831", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", - "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:36:24.970", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", - "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:36:25.271", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:36:25.335", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.883", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@505a9d7c, started on Tue Aug 19 17:35:35 CST 2025" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.924", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Beans' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.935", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Caches' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.941", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Health' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.944", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Info' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.950", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Conditions' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.955", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Configprops' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.957", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Env' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.961", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Loggers' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.968", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Threaddump' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.970", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Metrics' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.973", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Scheduledtasks' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:29.986", - "level": "DEBUG", - "thread": "SpringContextShutdownHook", - "class": "o.s.b.a.endpoint.jmx.JmxEndpointExporter", - "message": "Unregister endpoint with ObjectName 'org.springframework.boot:type=Endpoint,name=Mappings' from the JMX domain" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:44.550", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.l.ClasspathLoggingApplicationListener", - "message": "Application started with classpath: unknown" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:45.361", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Loading source class com.zbkj.admin.CrmebAdminApplication" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:45.629", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Activated activeProfiles dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:45.633", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application.yml' (classpath:/application.yml)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:45.637", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Profiles already activated, '[dev]' will not be applied" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:45.644", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.c.c.ConfigFileApplicationListener", - "message": "Loaded config file 'file:/D:/crmeb_java/crmeb/crmeb-admin/target/classes/application-dev.yml' (classpath:/application-dev.yml) for profile dev" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:44:45.667", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext", - "message": "Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@dcfda20" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:07.718", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:07.735", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "Code archive: C:\Users\fangx\.m2\repository\org\springframework\boot\spring-boot\2.2.6.RELEASE\spring-boot-2.2.6.RELEASE.jar" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:07.828", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.e.t.TomcatServletWebServerFactory", - "message": "None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored." } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:10.854", - "level": "DEBUG", - "thread": "main", - "class": "o.s.web.context.ContextLoader", - "message": "Published root WebApplicationContext as ServletContext attribute with name [org.springframework.web.context.WebApplicationContext.ROOT]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:30.619", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping filters: filterRegistrationBean urls=[/*] order=-2147483647, springSecurityFilterChain urls=[/*] order=-100, filterRegistrationBean urls=[/*] order=2147483647, filterRegistrationBean urls=[/api/*] order=2147483647, characterEncodingFilter urls=[/*] order=-2147483648, formContentFilter urls=[/*] order=-9900, requestContextFilter urls=[/*] order=-105, corsFilter urls=[/*] order=2147483647, jwtAuthenticationTokenFilter urls=[/*] order=2147483647" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:31.410", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.ServletContextInitializerBeans", - "message": "Mapping servlets: statViewServlet urls=[/druid/*], dispatcherServlet urls=[/]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:32.099", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.m.w.servlet.WebMvcMetricsFilter", - "message": "Filter 'webMvcMetricsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:32.587", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedRequestContextFilter", - "message": "Filter 'requestContextFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:32.936", - "level": "DEBUG", - "thread": "main", - "class": "o.springframework.web.filter.CorsFilter", - "message": "Filter 'corsFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:33.234", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedCharacterEncodingFilter", - "message": "Filter 'characterEncodingFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:33.839", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.DelegatingFilterProxyRegistrationBean$1", - "message": "Filter 'springSecurityFilterChain' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:45:34.126", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.w.s.f.OrderedFormContentFilter", - "message": "Filter 'formContentFilter' configured for use" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:46:31.574", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "331 mappings in 'requestMappingHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:46:33.469", - "level": "DEBUG", - "thread": "main", - "class": "o.s.b.a.SpringApplicationAdminMXBeanRegistrar$SpringApplicationAdmin", - "message": "Application Admin MBean registered with name 'org.springframework.boot:type=Admin,name=SpringApplication'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:46:33.537", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerAdapter", - "message": "ControllerAdvice beans: 0 @ModelAttribute, 0 @InitBinder, 1 RequestBodyAdvice, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:46:33.990", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Patterns [/webjars/**, /**, /doc.html, /crmebimage/**, /uploadf/**] in 'resourceHandlerMapping'" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:46:34.071", - "level": "DEBUG", - "thread": "main", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "ControllerAdvice beans: 1 @ExceptionHandler, 2 ResponseBodyAdvice" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:11.910", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Detected StandardServletMultipartResolver" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:11.970", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "enableLoggingRequestDetails='false': request parameters and headers will be masked to prevent unsafe logging of potentially sensitive data" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.160", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/doc.html", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.212", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.423", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.466", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/ext/i18n.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.497", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/jquery/jquery-1.9.1.min.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.503", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/ace/bootstrap.min.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.516", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/ace/ace.min.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.686", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/jquery/clipboard/clipboard.min.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.718", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/bootstrap/css/bootstrap.min.css", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.753", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.780", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.855", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.862", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:12.989", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:13.123", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:13.207", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:13.462", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:13.468", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:13.502", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:13.703", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:13.816", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:13.854", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layer3.0.3/skin/default/layer.css", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:13.896", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/highlight/styles/docco.css", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:13.941", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/highlight/styles/default.css", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:13.958", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/highlight/styles/style.css", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:14.040", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/cdao/swaggerbootstrapui.css?v=1.9.3", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:14.107", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/iconfont/iconfont.css", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:14.182", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:14.280", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:14.372", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:14.470", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:14.558", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:14.703", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:14.863", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:14.954", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.007", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.088", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.103", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.232", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.258", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layui/css/layui.css", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.272", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/ext/sbuadmin.css", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.296", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/bootstrap-tabx/css/bootstrap-tabs-x.min.css", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.321", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/cdao/swaggerbootstrapui-md.css?v=1.9.3", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.474", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layer3.0.3/layer.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.602", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/highlight/highlight.pack.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.631", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.651", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.781", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:15.925", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.042", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.131", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.271", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.272", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.333", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.347", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.489", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.503", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.522", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/jquery/template-web.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.640", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/jquery/marked.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.709", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/jquery/axios.min.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.876", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/bootstrap-tabx/js/bootstrap-tabs-x.min.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:16.965", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layui/layui.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:17.072", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layer3.0.3/skin/default/layer.css?v=3.0.3303", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:17.140", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:17.324", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:17.418", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:17.666", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:17.859", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:18.206", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:18.639", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:18.774", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:18.808", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.001", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.004", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.194", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.334", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/ace-editor/ace.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.434", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/jquery/showdown.min.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.492", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/jquery/async.min.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.540", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/cdao/swaggerbootstrapui.js?v=1.9.3", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.652", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/jquery/md5.min.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.685", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.694", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.706", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.766", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:19.871", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:20.144", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:20.410", - "level": "DEBUG", - "thread": "http-nio-20500-exec-4", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:20.422", - "level": "DEBUG", - "thread": "http-nio-20500-exec-2", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:20.923", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:20.939", - "level": "DEBUG", - "thread": "http-nio-20500-exec-28", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:22.294", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/ext/sbuadmin.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:22.444", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:22.606", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:22.696", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layui/lay/modules/layer.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:22.790", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:22.933", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:23.075", - "level": "DEBUG", - "thread": "http-nio-20500-exec-7", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layui/lay/modules/element.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:23.111", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layui/css/modules/layer/default/layer.css?v=3.1.1", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:23.267", - "level": "DEBUG", - "thread": "http-nio-20500-exec-7", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:23.442", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:23.561", - "level": "DEBUG", - "thread": "http-nio-20500-exec-7", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:23.562", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:23.688", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/ext/treetable.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:23.843", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:24.020", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:24.236", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layui/lay/modules/table.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:24.327", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:24.524", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:24.705", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layui/lay/modules/laytpl.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:24.796", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:24.893", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:24.965", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layui/lay/modules/laypage.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:25.073", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:25.295", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:25.364", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layui/lay/modules/form.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:25.460", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:25.559", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:25.620", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layui/lay/modules/util.js", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:25.699", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:25.820", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:26.107", - "level": "DEBUG", - "thread": "http-nio-20500-exec-8", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/ext/treetable-lay/treetable.css", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:26.176", - "level": "DEBUG", - "thread": "http-nio-20500-exec-9", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/swagger-resources", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:26.195", - "level": "DEBUG", - "thread": "http-nio-20500-exec-8", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:26.307", - "level": "DEBUG", - "thread": "http-nio-20500-exec-9", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to springfox.documentation.swagger.web.ApiResourceController#swaggerResources()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:26.339", - "level": "DEBUG", - "thread": "http-nio-20500-exec-8", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:26.538", - "level": "DEBUG", - "thread": "http-nio-20500-exec-9", - "class": "o.s.w.s.m.m.a.HttpEntityMethodProcessor", - "message": "Using 'application/json', given [application/json, text/javascript, */*;q=0.01] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:26.632", - "level": "DEBUG", - "thread": "http-nio-20500-exec-9", - "class": "o.s.w.s.m.m.a.HttpEntityMethodProcessor", - "message": "Writing [[springfox.documentation.swagger.web.SwaggerResource@444ded55, springfox.documentation.swagger.web.S (truncated)...]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:26.927", - "level": "DEBUG", - "thread": "http-nio-20500-exec-9", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:27.006", - "level": "DEBUG", - "thread": "http-nio-20500-exec-10", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/v2/api-docs?group=admin", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:29.392", - "level": "DEBUG", - "thread": "http-nio-20500-exec-10", - "class": "o.s.w.s.m.m.a.HttpEntityMethodProcessor", - "message": "Using 'application/json', given [application/json, text/javascript, */*;q=0.01] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:29.769", - "level": "DEBUG", - "thread": "http-nio-20500-exec-10", - "class": "o.s.w.s.m.m.a.HttpEntityMethodProcessor", - "message": "Writing [springfox.documentation.spring.web.json.Json@297afbf]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:30.022", - "level": "DEBUG", - "thread": "http-nio-20500-exec-10", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:32.014", - "level": "DEBUG", - "thread": "http-nio-20500-exec-16", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/images/api.ico", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:32.046", - "level": "DEBUG", - "thread": "http-nio-20500-exec-16", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:49:32.244", - "level": "DEBUG", - "thread": "http-nio-20500-exec-16", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:53:08.711", - "level": "DEBUG", - "thread": "http-nio-20500-exec-18", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layer3.0.3/skin/default/loading-2.gif", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:53:08.724", - "level": "DEBUG", - "thread": "http-nio-20500-exec-18", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:53:08.748", - "level": "DEBUG", - "thread": "http-nio-20500-exec-18", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:53:44.573", - "level": "DEBUG", - "thread": "http-nio-20500-exec-19", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/webjars/bycdao-ui/layui/font/iconfont.woff?v=240", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:53:44.590", - "level": "DEBUG", - "thread": "http-nio-20500-exec-19", - "class": "o.s.w.s.handler.SimpleUrlHandlerMapping", - "message": "Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/webjars/"]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:53:44.681", - "level": "DEBUG", - "thread": "http-nio-20500-exec-19", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:00:08.648", - "level": "DEBUG", - "thread": "http-nio-20500-exec-22", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/getLoginPic?temp=1755597604", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:00:08.816", - "level": "DEBUG", - "thread": "http-nio-20500-exec-23", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "POST "/api/admin/login/account/detection", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:00:08.974", - "level": "DEBUG", - "thread": "http-nio-20500-exec-23", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#accountDetection(AdminAccountDetectionRequest)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:00:09.091", - "level": "DEBUG", - "thread": "http-nio-20500-exec-22", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#getLoginPic()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:00:14.355", - "level": "DEBUG", - "thread": "http-nio-20500-exec-23", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Read "application/json;charset=UTF-8" to [AdminAccountDetectionRequest(account=demo)]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:00:25.004", - "level": "DEBUG", - "thread": "http-nio-20500-exec-23", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:00:25.168", - "level": "DEBUG", - "thread": "http-nio-20500-exec-23", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@6b03c941]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:00:25.210", - "level": "DEBUG", - "thread": "http-nio-20500-exec-23", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:00:28.794", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "POST "/api/admin/login", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:00:29.002", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#SystemAdminLogin(SystemAdminLoginRequest, HttpServletRequest)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:00:29.304", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Read "application/json;charset=UTF-8" to [SystemAdminLoginRequest(account=demo, pwd=crmeb.com, captchaVO=com.anji.captcha.model.vo.CaptchaVO@2 (truncated)...]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:26.659", - "level": "DEBUG", - "thread": "http-nio-20500-exec-22", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:27.226", - "level": "DEBUG", - "thread": "http-nio-20500-exec-22", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@739eec31]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:27.766", - "level": "DEBUG", - "thread": "http-nio-20500-exec-22", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:36.124", - "level": "DEBUG", - "thread": "http-nio-20500-exec-27", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/getLoginPic?temp=1755597695", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:36.397", - "level": "DEBUG", - "thread": "http-nio-20500-exec-3", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "POST "/api/admin/login/account/detection", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:37.440", - "level": "DEBUG", - "thread": "http-nio-20500-exec-27", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#getLoginPic()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:38.140", - "level": "DEBUG", - "thread": "http-nio-20500-exec-3", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#accountDetection(AdminAccountDetectionRequest)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:40.428", - "level": "DEBUG", - "thread": "http-nio-20500-exec-3", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Read "application/json;charset=UTF-8" to [AdminAccountDetectionRequest(account=demo)]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:43.811", - "level": "DEBUG", - "thread": "http-nio-20500-exec-27", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:43.890", - "level": "DEBUG", - "thread": "http-nio-20500-exec-27", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@57e48101]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:43.897", - "level": "DEBUG", - "thread": "http-nio-20500-exec-27", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:46.257", - "level": "DEBUG", - "thread": "http-nio-20500-exec-3", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:46.469", - "level": "DEBUG", - "thread": "http-nio-20500-exec-3", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@3cf4e0a0]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:46.488", - "level": "DEBUG", - "thread": "http-nio-20500-exec-3", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:58.877", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "Using @ExceptionHandler com.zbkj.service.exception.GlobalExceptionHandler#defaultExceptionHandler(HttpServletRequest, Exception)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:59.414", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:59.422", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@7c4a5939]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:59.426", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "Resolved [com.zbkj.common.exception.CrmebException: 账号或密码不正确]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:59.428", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:24.646", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "POST "/api/admin/login", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:24.781", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#SystemAdminLogin(SystemAdminLoginRequest, HttpServletRequest)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:24.849", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Read "application/json;charset=UTF-8" to [SystemAdminLoginRequest(account=demo, pwd=crmeb.com, captchaVO=com.anji.captcha.model.vo.CaptchaVO@7 (truncated)...]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:31.249", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "Using @ExceptionHandler com.zbkj.service.exception.GlobalExceptionHandler#defaultExceptionHandler(HttpServletRequest, Exception)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:35.321", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:35.374", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@67970c70]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:35.412", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "Resolved [com.zbkj.common.exception.CrmebException: 账号或密码不正确]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:35.454", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:36.167", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "POST "/api/admin/login/account/detection", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:36.181", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#accountDetection(AdminAccountDetectionRequest)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:36.266", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Read "application/json;charset=UTF-8" to [AdminAccountDetectionRequest(account=demo)]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:36.583", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:36.597", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@3caeffa]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:36.640", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:13.840", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "POST "/api/admin/login", parameters={}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:13.916", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#SystemAdminLogin(SystemAdminLoginRequest, HttpServletRequest)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:13.933", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Read "application/json;charset=UTF-8" to [SystemAdminLoginRequest(account=demo, pwd=123456, captchaVO=com.anji.captcha.model.vo.CaptchaVO@5ef0 (truncated)...]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:28.423", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:28.585", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@4223b27c]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:28.824", - "level": "DEBUG", - "thread": "http-nio-20500-exec-6", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:31.558", - "level": "DEBUG", - "thread": "http-nio-20500-exec-14", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/getMenus?temp=1755597809", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:31.613", - "level": "DEBUG", - "thread": "http-nio-20500-exec-14", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#getMenus()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:31.847", - "level": "DEBUG", - "thread": "http-nio-20500-exec-13", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/system/config/get/site/logo?temp=1755597809", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:31.913", - "level": "DEBUG", - "thread": "http-nio-20500-exec-13", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.SystemConfigController#getSiteLogo()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:33.030", - "level": "DEBUG", - "thread": "http-nio-20500-exec-15", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/getAdminInfoByToken?token=722cbb55b1d547bd920b1c5ce94ea4e8&temp=1755597809", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:33.211", - "level": "DEBUG", - "thread": "http-nio-20500-exec-15", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#getAdminInfo()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:33.639", - "level": "DEBUG", - "thread": "http-nio-20500-exec-15", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:33.672", - "level": "DEBUG", - "thread": "http-nio-20500-exec-13", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:33.738", - "level": "DEBUG", - "thread": "http-nio-20500-exec-13", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@2f21ccad]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:33.700", - "level": "DEBUG", - "thread": "http-nio-20500-exec-15", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@3e7576f3]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:33.836", - "level": "DEBUG", - "thread": "http-nio-20500-exec-13", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:33.856", - "level": "DEBUG", - "thread": "http-nio-20500-exec-15", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:34.747", - "level": "DEBUG", - "thread": "http-nio-20500-exec-10", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/public/jsconfig/get/front/domain?temp=1755597813", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:34.931", - "level": "DEBUG", - "thread": "http-nio-20500-exec-10", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.pub.GetJSConfig#getFrontDomain()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:35.181", - "level": "DEBUG", - "thread": "http-nio-20500-exec-18", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/getMenus?temp=1755597814", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:35.212", - "level": "DEBUG", - "thread": "http-nio-20500-exec-18", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.AdminLoginController#getMenus()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:35.707", - "level": "DEBUG", - "thread": "http-nio-20500-exec-16", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/public/jsconfig/get/admin/mediadomain?temp=1755597813", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:35.745", - "level": "DEBUG", - "thread": "http-nio-20500-exec-16", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.pub.GetJSConfig#getMediaDomain()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:36.245", - "level": "DEBUG", - "thread": "http-nio-20500-exec-14", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:36.256", - "level": "DEBUG", - "thread": "http-nio-20500-exec-14", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@408e4c72]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:36.260", - "level": "DEBUG", - "thread": "http-nio-20500-exec-10", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:36.290", - "level": "DEBUG", - "thread": "http-nio-20500-exec-14", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:36.294", - "level": "DEBUG", - "thread": "http-nio-20500-exec-10", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@6c1405de]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:36.397", - "level": "DEBUG", - "thread": "http-nio-20500-exec-10", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:36.670", - "level": "DEBUG", - "thread": "http-nio-20500-exec-16", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:36.707", - "level": "DEBUG", - "thread": "http-nio-20500-exec-16", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@4a021dd0]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:36.736", - "level": "DEBUG", - "thread": "http-nio-20500-exec-16", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:38.609", - "level": "DEBUG", - "thread": "http-nio-20500-exec-18", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:39.200", - "level": "DEBUG", - "thread": "http-nio-20500-exec-18", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@7d6e9017]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:40.018", - "level": "DEBUG", - "thread": "http-nio-20500-exec-18", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:40.876", - "level": "DEBUG", - "thread": "http-nio-20500-exec-27", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/statistics/home/chart/order?temp=1755597819", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:40.966", - "level": "DEBUG", - "thread": "http-nio-20500-exec-27", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.HomeController#chartOrder()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:41.329", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/statistics/home/operating/data?temp=1755597819", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:41.427", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.HomeController#operatingData()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:41.542", - "level": "DEBUG", - "thread": "http-nio-20500-exec-3", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/statistics/home/index?temp=1755597819", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:41.594", - "level": "DEBUG", - "thread": "http-nio-20500-exec-3", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.HomeController#indexDate()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:41.900", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/statistics/user/channel?temp=1755597819", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:42.151", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.UserStatisticsController#getChannelData()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:42.468", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/statistics/home/chart/user?temp=1755597819", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:42.547", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.HomeController#chartUser()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:43.632", - "level": "DEBUG", - "thread": "http-nio-20500-exec-29", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/statistics/user/overview?dateLimit=lately7&temp=1755597819", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:43.965", - "level": "DEBUG", - "thread": "http-nio-20500-exec-29", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.UserStatisticsController#getOverview(String)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:44.284", - "level": "DEBUG", - "thread": "http-nio-20500-exec-29", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "Using @ExceptionHandler com.zbkj.service.exception.GlobalExceptionHandler#defaultExceptionHandler(HttpServletRequest, Exception)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:44.284", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "Using @ExceptionHandler com.zbkj.service.exception.GlobalExceptionHandler#defaultExceptionHandler(HttpServletRequest, Exception)" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:44.423", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:44.517", - "level": "DEBUG", - "thread": "http-nio-20500-exec-27", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:45.013", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@6ef2e6e1]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:45.037", - "level": "DEBUG", - "thread": "http-nio-20500-exec-27", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@5acc3e]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:45.573", - "level": "DEBUG", - "thread": "http-nio-20500-exec-30", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:45.581", - "level": "DEBUG", - "thread": "http-nio-20500-exec-27", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:47.597", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/copyright/get/info?temp=1755597819", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:47.673", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.CopyrightController#getInfo()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:50.299", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.client.RestTemplate", - "message": "HTTP POST https://authorize.crmeb.net/api/auth_cert_query?domain_name=http://1111&label=22&version=CRMEB-JAVA-KY-v1.4" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:50.452", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.client.RestTemplate", - "message": "Accept=[application/json, application/cbor, application/*+json, text/plain, text/html]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:50.856", - "level": "DEBUG", - "thread": "http-nio-20500-exec-3", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:50.863", - "level": "DEBUG", - "thread": "http-nio-20500-exec-3", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@2684c6c2]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:50.957", - "level": "DEBUG", - "thread": "http-nio-20500-exec-3", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:51.575", - "level": "DEBUG", - "thread": "http-nio-20500-exec-29", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:51.602", - "level": "DEBUG", - "thread": "http-nio-20500-exec-29", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@5fe17ca2]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:51.604", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:51.622", - "level": "DEBUG", - "thread": "http-nio-20500-exec-29", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "Resolved [org.springframework.security.access.AccessDeniedException: 不允许访问]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:51.623", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@572e6aab]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:51.691", - "level": "DEBUG", - "thread": "http-nio-20500-exec-29", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:51.732", - "level": "DEBUG", - "thread": "http-nio-20500-exec-25", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:54.658", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:54.672", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@252a3ce2]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:54.679", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver", - "message": "Resolved [org.springframework.security.access.AccessDeniedException: 不允许访问]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:54.694", - "level": "DEBUG", - "thread": "http-nio-20500-exec-1", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:59.454", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.client.RestTemplate", - "message": "Response 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:59.470", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.client.RestTemplate", - "message": "Reading to [com.alibaba.fastjson.JSONObject]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:59.517", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:59.528", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@1949af4e]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:59.540", - "level": "DEBUG", - "thread": "http-nio-20500-exec-5", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 21:39:56.064", - "level": "DEBUG", - "thread": "http-nio-20500-exec-13", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "GET "/api/admin/statistics/home/chart/order/year?temp=1755610795", parameters={masked}" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 21:39:56.080", - "level": "DEBUG", - "thread": "http-nio-20500-exec-13", - "class": "o.s.w.s.m.m.a.RequestMappingHandlerMapping", - "message": "Mapped to com.zbkj.admin.controller.HomeController#chartOrderInYear()" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 21:39:56.302", - "level": "DEBUG", - "thread": "http-nio-20500-exec-13", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Using 'application/json', given [application/json, text/plain, */*] and supported [application/json, application/*+json, application/json, application/*+json, application/cbor]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 21:39:56.320", - "level": "DEBUG", - "thread": "http-nio-20500-exec-13", - "class": "o.s.w.s.m.m.a.RequestResponseBodyMethodProcessor", - "message": "Writing [com.zbkj.common.result.CommonResult@76976488]" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 21:39:56.333", - "level": "DEBUG", - "thread": "http-nio-20500-exec-13", - "class": "o.s.web.servlet.DispatcherServlet", - "message": "Completed 200 OK" } - diff --git a/crmeb_admin_log/log_error.log b/crmeb_admin_log/log_error.log deleted file mode 100644 index 9ba0a45e..00000000 --- a/crmeb_admin_log/log_error.log +++ /dev/null @@ -1,102369 +0,0 @@ -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:10.634", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:10.660", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:11.202", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:11.741", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:12.296", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:12.825", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:13.339", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:13.850", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:14.362", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:14.880", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:15.397", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:15.914", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:16.429", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:16.951", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:17.470", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:17.986", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:18.498", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:19.010", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:19.529", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:20.038", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:20.561", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:21.073", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:21.595", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:22.106", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:22.623", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:23.135", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:23.651", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:24.166", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:24.680", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:25.188", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:25.705", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:26.232", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:26.767", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:27.280", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:27.791", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:28.305", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:28.822", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:29.338", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:29.850", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:30.367", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:30.889", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:31.411", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:31.924", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:32.441", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:32.956", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:33.469", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:33.976", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:34.493", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:35.006", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:35.511", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:36.027", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:36.549", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:37.062", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:37.577", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:38.090", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:38.600", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:39.111", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:39.624", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:40.132", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:40.645", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:41.154", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:41.673", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:42.182", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:42.795", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:43.344", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:43.855", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:44.370", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:44.882", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:45.394", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:45.903", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:46.415", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:46.925", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:47.435", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:47.951", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:48.463", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:48.978", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:49.497", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:50.008", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:50.521", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:51.039", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:51.557", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:52.075", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:52.586", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:53.096", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:53.608", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:54.124", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:54.640", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:55.151", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:55.661", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:56.181", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:56.701", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:57.209", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:57.720", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:58.228", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:58.741", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:59.253", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:28:59.764", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:00.277", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:00.794", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:01.325", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:01.883", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:02.399", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:02.926", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:03.511", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:04.031", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:04.547", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:05.063", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:05.582", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:06.114", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:06.685", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:07.202", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:07.738", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:08.250", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:08.763", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:09.279", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:09.806", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:10.323", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:10.836", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:11.350", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:11.868", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:12.380", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:12.887", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:13.400", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:13.914", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:14.422", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:14.937", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:15.458", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:15.978", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:16.507", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:17.020", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:17.534", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:18.043", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:18.554", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:19.064", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:19.574", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:20.091", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:20.607", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:21.124", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:21.646", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:22.159", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:22.681", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:23.193", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:23.706", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:24.220", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:24.727", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:25.242", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:25.754", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:26.303", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:26.841", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:27.349", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:27.859", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:28.369", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:28.880", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:29.396", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:29.909", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:30.418", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:30.933", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:31.452", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:31.967", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:32.481", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:33.002", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:33.513", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:34.021", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:34.533", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:35.048", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:35.552", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:36.068", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:36.590", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:37.102", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:37.617", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:38.137", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:38.651", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:39.164", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:39.673", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:40.192", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:40.704", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:41.218", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:41.743", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:42.254", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:42.764", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:43.273", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:43.788", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:44.302", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:44.813", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:45.325", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:45.839", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:46.351", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:46.863", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:47.379", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:47.892", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:48.409", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:48.923", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:49.437", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:49.946", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:50.466", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:50.979", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:51.507", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:52.016", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:52.528", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:53.042", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:53.551", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:54.064", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:54.577", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:55.093", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:55.610", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:56.140", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:56.679", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:57.194", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:57.703", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:58.214", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:58.725", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:59.234", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:29:59.746", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:00.253", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:00.766", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:01.282", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:01.832", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:02.342", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:02.853", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:03.372", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:03.887", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:04.399", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:04.906", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:05.426", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:05.943", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:06.454", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:06.968", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:07.475", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:07.988", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:08.505", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:09.018", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:09.525", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:10.038", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:10.545", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:11.058", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:11.574", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:12.087", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:12.593", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:13.108", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:13.622", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:14.132", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:14.643", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:15.153", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:15.664", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:16.178", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:16.702", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:17.212", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:17.730", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:18.243", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:18.752", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:19.263", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:19.775", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:20.284", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:20.795", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:21.310", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:21.828", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:22.344", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:22.854", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:23.365", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:23.879", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:24.389", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:24.901", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:25.415", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:25.924", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:26.437", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:26.952", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:27.466", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:27.976", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:28.488", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:29.006", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:29.534", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:30.051", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:30.560", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:31.073", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:31.602", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:32.111", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:32.623", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:33.144", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:33.662", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:34.178", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:34.693", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:35.207", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:35.722", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:36.235", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:36.758", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:37.280", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:37.793", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:38.305", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:38.815", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:39.330", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:39.849", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:40.360", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:40.870", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:41.397", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:41.968", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:42.498", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:43.013", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:43.525", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:44.036", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:44.549", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:45.062", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:45.570", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:46.083", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:46.628", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:47.137", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:47.649", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:48.168", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:48.683", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:49.197", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:49.706", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:50.218", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:50.730", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:51.241", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:51.783", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:52.295", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:52.808", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:53.320", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:53.837", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:54.349", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:54.861", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:55.374", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:55.889", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:56.410", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:56.946", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:57.461", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:57.974", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:58.490", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:59.008", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:30:59.524", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:00.038", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:00.550", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:01.068", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:01.596", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:02.113", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:02.625", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:03.147", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:03.660", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:04.175", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:04.683", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:05.197", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:05.713", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:06.230", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:06.760", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:07.270", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:07.782", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:08.299", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:08.815", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:09.332", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:09.844", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:10.359", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:10.914", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:11.456", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:11.969", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:12.531", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:13.041", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:13.555", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:14.067", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:14.582", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:15.098", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:15.607", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:16.120", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:16.656", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:17.169", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:17.681", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:18.190", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:18.703", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:19.216", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:19.724", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:20.241", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:20.758", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:21.273", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:21.820", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:22.329", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:22.842", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:23.353", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:23.862", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:24.375", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:24.887", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:25.396", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:25.910", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:26.424", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:26.932", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:27.450", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:27.968", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:28.483", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:28.994", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:29.505", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:30.019", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:30.530", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:31.042", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:31.563", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:32.076", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:32.594", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:33.103", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:33.614", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:34.125", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:34.633", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:35.148", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:35.656", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:36.169", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:36.688", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:37.201", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:37.714", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:38.221", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:38.733", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:39.247", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:39.756", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:40.269", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:40.785", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:41.305", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:41.854", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:42.385", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:42.912", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:43.436", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:43.951", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:44.458", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:44.971", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:45.485", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:45.992", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:46.516", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:47.029", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:47.542", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:48.058", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:48.572", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:49.087", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:49.595", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:50.110", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:50.624", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:51.137", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:51.673", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:52.180", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:52.694", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:53.204", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:53.715", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:54.230", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:54.747", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:55.260", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:55.768", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:56.279", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:56.794", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:57.302", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:57.815", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:58.332", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:58.843", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:59.353", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:31:59.863", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:00.372", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:00.884", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:01.401", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:01.916", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:02.430", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:02.955", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:03.471", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:03.984", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:04.492", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:05.003", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:05.522", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:06.037", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:06.569", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:07.081", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:07.601", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:08.109", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:08.622", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:09.131", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:09.639", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:10.150", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:10.656", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:11.165", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:11.692", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:12.206", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:12.716", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:13.228", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:13.742", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:14.251", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:14.760", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:15.270", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:15.776", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:16.286", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:16.798", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:17.309", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:17.819", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:18.329", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:18.840", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:19.345", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:19.854", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:20.364", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:20.875", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:21.385", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:21.894", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:22.402", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:22.918", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:23.430", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:23.940", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:24.456", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:24.970", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:25.479", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:25.989", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:26.513", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:27.023", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:27.534", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:28.044", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:28.551", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:29.063", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:29.574", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:30.084", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:30.591", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:31.100", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:31.638", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:32.149", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:32.658", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:33.172", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:33.689", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:34.208", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:34.722", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:35.231", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:35.741", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:36.253", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:36.798", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:37.306", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:37.814", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:38.325", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:38.833", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:39.341", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:39.847", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:40.357", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:40.867", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:41.397", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:41.908", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:42.424", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:42.931", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:43.441", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:43.947", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:44.458", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:44.965", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:45.477", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:45.986", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:46.514", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:47.030", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:47.540", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:48.048", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:48.556", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:49.064", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:49.571", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:50.079", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:50.586", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:51.106", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:51.640", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:52.149", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:52.656", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:53.165", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:53.672", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:54.185", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:54.693", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:55.202", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:55.712", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:56.222", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:56.755", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:57.267", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:57.773", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:58.284", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:58.793", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:59.304", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:32:59.814", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:00.326", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:00.840", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:01.350", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:01.858", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:02.370", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:02.878", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:03.391", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:03.899", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:04.406", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:04.913", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:05.424", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:05.932", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:06.443", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:06.957", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:07.463", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:07.975", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:08.480", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:08.989", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:09.497", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:10.008", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:10.515", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:11.029", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:11.548", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:12.065", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:12.577", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:13.082", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:13.591", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:14.099", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:14.608", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:15.116", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:15.626", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:16.136", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:16.670", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:17.185", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:17.695", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:18.207", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:18.716", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:19.226", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:19.735", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:20.247", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:20.756", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:21.272", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:21.809", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:22.320", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:22.827", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:23.336", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:23.844", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:24.353", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:24.859", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:25.370", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:25.877", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:26.387", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:26.894", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:27.405", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:27.914", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:28.424", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:28.932", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:29.446", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:29.957", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:30.463", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:30.973", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:31.480", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:31.990", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:32.498", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:33.012", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:33.522", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:34.030", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:34.543", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:35.050", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:35.560", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:36.067", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:36.590", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:37.099", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:37.611", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:38.117", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:38.629", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:39.145", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:39.663", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:40.169", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:40.680", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:41.188", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:41.706", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:42.216", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:42.723", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:43.234", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:43.741", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:44.252", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:44.763", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:45.271", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:45.780", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:46.287", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:46.794", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:47.305", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:47.816", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:48.324", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:48.836", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:49.341", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:49.852", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:50.361", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:50.871", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:51.378", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:51.888", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:52.398", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:52.941", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:53.448", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:53.958", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:54.464", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:54.975", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:55.482", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:55.993", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:56.512", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:57.020", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:57.528", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:58.034", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:58.542", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:59.048", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:33:59.565", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:00.074", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:00.583", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:01.098", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:01.636", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:02.153", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:02.669", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:03.178", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:03.685", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:04.196", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:04.703", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:05.213", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:05.720", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:06.231", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:06.773", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:07.283", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:07.791", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:08.306", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:08.819", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:09.328", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:09.839", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:10.348", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:10.858", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:11.368", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:11.875", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:12.393", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:12.903", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:13.409", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:13.920", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:14.427", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:14.936", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:15.444", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:15.958", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:16.463", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:16.973", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:17.481", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:17.993", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:18.500", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:19.011", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:19.517", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:20.028", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:20.536", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:21.044", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:21.566", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:22.080", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:22.587", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:23.095", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:23.604", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:24.114", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:24.621", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:25.130", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:25.636", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:26.147", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:26.663", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:27.171", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:27.681", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:28.190", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:28.700", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:29.208", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:29.717", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:30.225", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:30.732", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:31.247", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:31.799", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:32.305", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:32.817", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:33.333", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:33.840", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:34.350", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:34.858", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:35.374", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:35.885", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:36.393", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:36.908", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:37.424", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:37.933", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:38.441", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:38.954", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:39.461", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:39.971", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:40.478", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:40.991", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:41.508", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:42.014", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:42.524", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:43.030", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:43.539", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:44.046", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:44.563", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:45.081", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:45.591", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:46.098", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:46.628", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:47.133", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:47.642", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:48.149", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:48.659", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:49.167", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:49.678", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:50.183", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:50.695", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:51.202", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:51.722", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:52.233", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:52.739", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:53.251", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:53.757", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:54.267", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:54.774", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:55.284", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:55.793", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:56.301", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:56.813", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:57.326", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:57.839", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:58.351", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:58.858", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:59.368", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:34:59.874", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:00.385", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:00.893", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:01.403", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:01.909", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:02.425", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:02.933", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:03.441", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:03.948", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:04.457", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:04.966", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:05.475", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:05.982", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:06.493", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:07.002", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:07.510", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:08.017", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:08.529", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:09.035", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:09.545", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:10.052", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:10.561", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:11.069", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:11.587", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:12.097", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:12.602", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:13.111", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:13.619", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:14.128", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:14.635", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:15.145", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:15.654", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:16.163", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:16.680", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:17.186", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:17.704", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:18.215", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:18.722", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:19.236", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:19.747", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:20.254", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:20.762", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:21.286", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:21.797", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:22.306", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:22.817", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:23.325", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:23.835", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:24.343", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:24.852", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:25.360", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:25.942", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:26.460", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:26.970", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:27.478", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:27.987", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:28.496", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:29.006", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:29.512", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:30.022", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:30.528", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:31.041", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:31.563", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:32.074", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:32.584", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:33.095", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:33.604", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:34.113", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:34.622", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:35.132", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:35.645", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:36.151", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:36.681", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:37.187", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:37.695", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:38.201", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:38.711", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:39.218", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:39.728", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:40.238", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:40.747", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:41.263", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:41.805", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:42.315", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:42.823", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:43.334", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:43.840", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:44.350", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:44.857", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:45.367", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:45.875", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:46.384", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:46.892", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:47.401", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:47.908", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:48.421", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:48.927", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:49.439", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:49.953", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:50.469", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:50.986", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:51.493", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:52.003", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:52.509", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:53.018", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:53.527", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:54.034", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:54.542", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:55.048", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:55.559", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:56.065", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:56.585", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:57.095", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:57.604", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:58.111", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:58.617", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:59.129", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:35:59.637", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:00.147", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:00.656", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:01.172", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:01.687", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:02.197", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:02.703", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:03.220", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:03.730", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:04.236", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:04.746", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:05.252", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:05.762", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:06.276", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:06.804", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:07.314", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:07.824", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:08.334", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:08.840", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:09.350", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:09.859", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:10.368", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:10.876", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:11.385", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:11.893", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:12.404", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:12.912", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:13.423", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:13.929", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:14.438", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:14.945", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:15.456", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:15.964", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:16.473", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:16.980", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:17.493", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:17.998", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:18.506", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:19.014", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:19.523", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:20.031", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:20.545", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:21.063", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:21.580", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:22.094", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:22.600", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:23.112", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:23.629", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:24.137", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:24.645", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:25.151", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:25.668", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:26.180", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:26.697", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:27.203", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:27.711", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:28.218", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:28.728", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:29.238", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:29.748", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:30.256", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:30.769", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:31.279", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:31.804", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:32.315", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:32.823", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:33.332", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:33.839", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:34.349", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:34.857", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:35.369", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:35.876", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:36.385", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:36.891", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:37.402", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:37.908", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:38.420", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:38.927", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:39.437", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:39.943", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:40.454", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:40.961", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:41.481", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:41.990", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:42.497", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:43.007", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:43.514", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:44.025", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:44.531", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:45.039", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:45.545", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:46.055", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:46.575", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:47.082", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:47.591", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:48.097", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:48.605", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:49.114", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:49.623", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:50.132", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:50.640", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:51.149", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:51.669", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:52.180", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:52.688", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:53.197", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:53.704", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:54.215", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:54.731", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:55.237", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:55.766", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:56.287", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:56.805", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:57.316", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:57.827", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:58.337", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:58.844", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:59.353", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:36:59.860", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:00.369", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:00.875", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:01.385", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:01.892", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:02.402", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:02.908", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:03.424", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:03.932", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:04.441", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:04.947", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:05.456", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:05.965", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:06.472", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:06.979", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:07.489", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:07.995", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:08.506", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:09.013", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:09.523", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:10.031", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:10.544", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:11.052", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:11.580", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:12.090", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:12.596", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:13.104", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:13.612", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:14.119", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:14.627", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:15.133", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:15.645", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:16.152", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:16.679", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:17.187", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:17.699", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:18.206", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:18.716", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:19.224", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:19.735", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:20.242", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:20.751", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:21.267", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:21.804", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:22.315", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:22.825", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:23.336", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:23.844", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:24.351", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:24.862", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:25.371", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:25.883", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:26.392", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:26.905", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:27.419", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:27.926", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:28.439", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:28.945", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:29.457", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:29.964", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:30.473", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:30.979", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:31.489", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:31.997", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:32.506", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:33.013", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:33.522", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:34.030", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:34.540", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:35.047", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:35.557", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:36.064", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:36.582", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:37.095", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:37.603", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:38.112", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:38.621", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:39.131", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:39.638", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:40.146", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:40.653", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:41.164", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:41.679", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:42.186", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:42.696", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:43.202", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:43.713", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:44.219", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:44.724", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:45.234", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:45.740", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:46.253", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:46.824", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:47.335", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:47.842", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:48.353", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:48.859", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:49.370", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:49.876", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:50.388", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:50.895", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:51.405", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:51.915", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:52.426", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:52.942", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:53.451", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:53.959", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:54.466", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:54.976", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:55.483", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:55.994", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:56.505", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:57.012", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:57.523", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:58.032", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:58.543", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:59.051", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:37:59.564", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:00.075", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:00.581", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:01.095", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:01.631", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:02.142", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:02.651", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:03.161", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:03.668", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:04.182", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:04.693", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:05.200", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:05.710", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:06.219", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:06.754", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:07.264", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:07.773", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:08.281", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:08.790", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:09.299", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:09.807", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:10.316", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:10.825", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:11.335", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:11.842", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:12.351", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:12.859", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:13.368", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:13.874", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:14.385", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:14.893", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:15.403", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:15.909", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:16.425", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:16.935", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:17.442", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:17.950", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:18.459", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:18.971", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:19.478", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:19.988", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:20.495", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:21.006", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:21.527", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:22.033", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:22.545", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:23.058", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:23.563", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:24.077", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:24.583", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:25.095", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:25.601", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:26.111", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:26.633", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:27.144", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:27.651", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:28.166", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:28.679", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:29.188", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:29.700", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:30.206", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:30.716", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:31.225", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:31.769", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:32.279", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:32.786", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:33.296", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:33.803", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:34.316", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:34.826", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:35.337", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:35.849", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:36.358", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:36.871", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:37.383", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:37.893", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:38.405", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:38.913", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:39.427", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:39.938", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:40.443", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:40.958", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:41.470", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:41.977", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:42.487", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:42.996", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:43.510", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:44.022", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:44.531", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:45.042", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:45.549", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:46.058", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:46.581", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:47.091", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:47.599", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:48.114", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:48.629", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:49.139", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:49.647", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:50.154", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:50.668", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:51.179", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:51.697", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:52.204", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:52.713", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:53.227", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:53.736", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:54.250", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:54.762", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:55.270", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:55.780", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:56.296", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:56.827", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:57.338", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:57.848", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:58.354", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:58.871", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:59.382", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:38:59.890", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:00.400", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:00.909", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:01.423", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:01.934", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:02.441", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:02.954", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:03.460", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:03.973", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:04.497", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:05.009", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:05.520", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:06.027", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:06.553", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:07.064", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:07.574", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:08.081", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:08.592", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:09.097", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:09.607", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:10.124", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:10.633", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:11.144", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:11.666", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:12.177", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:12.684", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:13.195", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:13.701", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:14.210", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:14.715", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:15.227", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:15.735", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:16.247", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:16.798", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:17.311", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:17.823", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:18.332", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:18.840", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:19.348", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:19.854", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:20.366", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:20.872", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:21.381", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:21.888", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:22.399", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:22.906", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:23.421", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:23.932", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:24.438", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:24.947", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:25.456", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:25.967", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:26.475", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:26.985", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:27.494", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:28.007", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:28.516", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:29.026", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:29.541", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:30.050", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:30.559", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:31.071", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:31.587", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:32.096", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:32.607", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:33.115", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:33.625", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:34.132", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:34.644", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:35.150", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:35.660", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:36.169", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:36.685", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:37.196", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:37.703", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:38.218", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:38.734", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:39.246", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:39.756", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:40.264", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:40.770", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:41.283", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:41.828", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:42.335", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:42.846", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:43.353", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:43.862", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:44.369", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:44.879", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:45.385", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:45.892", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:46.400", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:46.907", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:47.423", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:47.934", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:48.441", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:48.950", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:49.457", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:49.967", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:50.475", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:50.985", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:51.491", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:52.001", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:52.510", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:53.021", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:53.530", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:54.041", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:54.547", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:55.057", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:55.563", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:56.075", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:56.595", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:57.106", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:57.613", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:58.122", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:58.630", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:59.146", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:39:59.659", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:00.175", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:00.681", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:01.196", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:01.727", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:02.241", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:02.748", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:03.259", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:03.766", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:04.277", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:04.785", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:05.296", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:05.807", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:06.318", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:06.829", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:07.336", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:07.847", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:08.353", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:08.867", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:09.374", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:09.883", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:10.390", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:10.901", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:11.409", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:11.919", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:12.427", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:12.935", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:13.441", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:13.950", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:14.457", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:14.967", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:15.476", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:15.992", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:16.502", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:17.012", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:17.521", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:18.029", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:18.538", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:19.046", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:19.557", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:20.063", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:20.574", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:21.082", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:21.599", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:22.110", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:22.617", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:23.127", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:23.633", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:24.145", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:24.657", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:25.163", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:25.671", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:26.180", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:26.697", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:27.205", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:27.713", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:28.223", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:28.731", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:29.237", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:29.750", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:30.261", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:30.768", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:31.281", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:31.818", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:32.334", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:32.846", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:33.354", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:33.864", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:34.370", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:34.878", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:35.386", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:35.897", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:36.404", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:36.917", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:37.424", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:37.934", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:38.440", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:38.955", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:39.463", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:39.973", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:40.485", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:40.993", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:41.506", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:42.012", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:42.522", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:43.028", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:43.539", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:44.047", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:44.558", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:45.068", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:45.576", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:46.085", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:46.599", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:47.110", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:47.618", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:48.128", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:48.635", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:49.144", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:49.651", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:50.161", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:50.670", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:51.179", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:51.698", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:52.216", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:52.728", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:53.235", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:53.746", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:54.255", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:54.762", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:55.270", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:55.781", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:56.309", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:56.836", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:57.347", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:57.853", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:58.364", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:58.872", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:59.381", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:40:59.889", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:00.403", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:00.909", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:01.424", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:01.936", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:02.442", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:02.953", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:03.460", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:03.970", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:04.479", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:04.991", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:05.501", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:06.010", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:06.524", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:07.037", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:07.543", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:08.056", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:08.563", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:09.073", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:09.579", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:10.091", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:10.597", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:11.107", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:11.623", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:12.131", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:12.641", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:13.148", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:13.657", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:14.165", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:14.677", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:15.185", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:15.695", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:16.205", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:16.720", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:17.232", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:17.741", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:18.249", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:18.761", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:19.267", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:19.778", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:20.284", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:20.793", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:21.303", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:21.824", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:22.340", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:22.850", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:23.357", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:23.867", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:24.374", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:24.883", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:25.390", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:25.898", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:26.404", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:26.913", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:27.422", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:27.928", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:28.437", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:28.943", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:29.454", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:29.960", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:30.470", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:30.977", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:31.487", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:31.994", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:32.504", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:33.010", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:33.520", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:34.028", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:34.542", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:35.049", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:35.558", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:36.068", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:36.590", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:37.098", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:37.607", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:38.115", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:38.625", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:39.132", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:39.643", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:40.148", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:40.660", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:41.173", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:41.700", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:42.211", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:42.719", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:43.227", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:43.734", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:44.242", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:44.749", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:45.257", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:45.766", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:46.276", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:46.803", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:47.318", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:47.825", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:48.333", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:48.841", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:49.353", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:49.859", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:50.371", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:50.878", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:51.389", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:51.906", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:52.422", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:52.928", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:53.439", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:53.949", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:54.458", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:54.968", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:55.474", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:55.981", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:56.489", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:56.996", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:57.507", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:58.013", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:58.524", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:59.030", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:41:59.540", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:00.047", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:00.557", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:01.064", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:01.591", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:02.098", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:02.612", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:03.120", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:03.630", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:04.137", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:04.647", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:05.159", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:05.667", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:06.178", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:06.697", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:07.206", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:07.716", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:08.227", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:08.735", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:09.255", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:09.770", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:10.283", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:10.789", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:11.315", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:11.847", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:12.355", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:12.868", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:13.375", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:13.885", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:14.391", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:14.902", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:15.417", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:15.923", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:16.436", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:16.943", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:17.460", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:17.977", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:18.489", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:19.020", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:19.542", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:20.055", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:20.562", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:21.072", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:21.595", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:22.108", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:22.614", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:23.124", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:23.631", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:24.142", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:24.649", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:25.161", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:25.667", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:26.178", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:26.696", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:27.207", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:27.713", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:28.225", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:28.731", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:29.239", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:29.748", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:30.255", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:30.767", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:31.286", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:31.854", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:32.364", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:32.871", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:33.384", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:33.893", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:34.400", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:34.910", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:35.420", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:35.930", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:36.437", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:36.947", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:37.453", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:37.961", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:38.471", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:38.981", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:39.489", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:40.000", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:40.507", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:41.022", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:41.542", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:42.057", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:42.565", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:43.074", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:43.583", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:44.094", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:44.608", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:45.115", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:45.623", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:46.134", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:46.661", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:47.171", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:47.678", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:48.189", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:48.694", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:49.206", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:49.714", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:50.224", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:50.731", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:51.243", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:51.758", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:52.265", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:52.775", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:53.283", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:53.793", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:54.299", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:54.808", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:55.315", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:55.829", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:56.336", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:56.849", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:57.356", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:57.865", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:58.372", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:58.880", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:59.387", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:42:59.899", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:00.406", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:00.915", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:01.421", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:01.932", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:02.439", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:02.950", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:03.457", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:03.971", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:04.482", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:04.989", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:05.497", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:06.007", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:06.516", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:07.024", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:07.536", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:08.042", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:08.553", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:09.059", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:09.569", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:10.075", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:10.585", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:11.093", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:11.611", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:12.120", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:12.629", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:13.140", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:13.649", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:14.157", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:14.664", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:15.178", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:15.684", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:16.193", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:16.709", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:17.217", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:17.731", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:18.242", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:18.750", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:19.260", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:19.767", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:20.282", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:20.789", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:21.301", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:21.854", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:22.366", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:22.874", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:23.385", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:23.891", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:24.406", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:24.918", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:25.435", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:25.941", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:26.453", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:26.961", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:27.475", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:27.991", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:28.503", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:29.010", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:29.521", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:30.039", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:30.551", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:31.058", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:31.587", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:32.094", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:32.604", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:33.111", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:33.622", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:34.130", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:34.640", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:35.148", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:35.657", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:36.170", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:36.696", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:37.207", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:37.713", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:38.224", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:38.732", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:39.241", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:39.748", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:40.258", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:40.766", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:41.293", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:41.814", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:42.332", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:42.844", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:43.352", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:43.865", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:44.372", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:44.884", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:45.395", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:45.902", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:46.418", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:46.929", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:47.438", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:47.952", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:48.459", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:48.969", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:49.478", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:49.988", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:50.498", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:51.004", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:51.512", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:52.020", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:52.530", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:53.038", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:53.545", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:54.056", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:54.564", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:55.072", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:55.578", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:56.088", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:56.610", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:57.124", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:57.630", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:58.141", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:58.648", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:59.159", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:43:59.670", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:00.178", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:00.688", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:01.197", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:01.723", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:02.231", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:02.744", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:03.262", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:03.771", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:04.280", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:04.790", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:05.297", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:05.806", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:06.391", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:06.975", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:07.480", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:07.988", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:08.498", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:09.005", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:09.515", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:10.022", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:10.533", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:11.040", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:11.569", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:12.080", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:12.587", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:13.097", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:13.605", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:14.115", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:14.623", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:15.138", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:15.649", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:16.163", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:16.690", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:17.200", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:17.710", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:18.220", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:18.727", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:19.236", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:19.743", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:20.255", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:20.761", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:21.274", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:21.829", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:22.341", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:22.849", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:23.359", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:23.866", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:24.376", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:24.882", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:25.393", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:25.900", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:26.410", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:26.921", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:27.430", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:27.940", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:28.447", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:28.959", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:29.466", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:29.976", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:30.484", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:30.994", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:31.501", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:32.011", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:32.518", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:33.029", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:33.535", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:34.046", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:34.553", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:35.063", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:35.570", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:36.081", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:36.605", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:37.114", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:37.621", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:38.134", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:38.640", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:39.152", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:39.658", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:40.171", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:40.682", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:41.190", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:41.720", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:42.245", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:42.755", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:43.267", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:43.773", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:44.281", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:44.793", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:45.303", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:45.812", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:46.332", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:46.857", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:47.365", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:47.875", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:48.383", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:48.893", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:49.402", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:49.910", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:50.425", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:50.935", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:51.445", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:51.958", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:52.466", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:52.976", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:53.483", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:53.996", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:54.506", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:55.014", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:55.526", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:56.034", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:56.554", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:57.064", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:57.570", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:58.079", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:58.586", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:59.096", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:44:59.602", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:00.116", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:00.621", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:01.132", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:01.647", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:02.154", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:02.664", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:03.170", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:03.681", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:04.188", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:04.697", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:05.204", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:05.714", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:06.221", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:06.740", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:07.250", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:07.757", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:08.266", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:08.775", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:09.288", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:09.794", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:10.304", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:10.810", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:11.329", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:11.863", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:12.371", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:12.878", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:13.389", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:13.895", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:14.405", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:14.911", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:15.418", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:15.927", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:16.433", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:16.944", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:17.450", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:17.961", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:18.467", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:18.976", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:19.483", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:19.993", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:20.500", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:21.010", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:21.517", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:22.027", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:22.532", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:23.039", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:23.548", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:24.054", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:24.564", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:25.071", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:25.581", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:26.088", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:26.625", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:27.135", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:27.642", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:28.151", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:28.658", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:29.165", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:29.673", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:30.182", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:30.688", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:31.196", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:31.721", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:32.227", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:32.736", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:33.244", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:33.752", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:34.260", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:34.770", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:35.278", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:35.788", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:36.298", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:36.827", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:37.337", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:37.846", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:38.355", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:38.864", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:39.373", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:39.879", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:40.393", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:40.933", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:41.441", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:41.949", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:42.459", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:42.967", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:43.476", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:43.984", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:44.494", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:45.002", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:45.512", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:46.018", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:46.529", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:47.035", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:47.546", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:48.052", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:48.563", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:49.071", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:49.581", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:50.089", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:50.600", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:51.105", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:51.625", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:52.138", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:52.654", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:53.161", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:53.672", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:54.186", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:54.693", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:55.204", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:55.712", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:56.221", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:56.738", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:57.244", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:57.755", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:58.264", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:58.774", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:59.282", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:45:59.791", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:00.298", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:00.807", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:01.335", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:01.861", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:02.370", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:02.878", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:03.389", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:03.897", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:04.406", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:04.914", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:05.425", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:05.932", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:06.447", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:06.960", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:07.468", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:07.978", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:08.485", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:08.997", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:09.503", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:10.013", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:10.520", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:11.030", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:11.536", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:12.045", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:12.555", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:13.064", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:13.571", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:14.081", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:14.588", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:15.097", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:15.603", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:16.113", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:16.624", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:17.135", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:17.641", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:18.150", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:18.657", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:19.168", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:19.675", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:20.185", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:20.693", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:21.215", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:21.742", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:22.275", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:22.810", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:23.327", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:23.850", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:24.362", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:24.876", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:25.400", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:25.925", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:26.433", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:26.959", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:27.466", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:27.978", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:28.491", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:28.998", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:29.513", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:30.026", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:30.532", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:31.041", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:31.550", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:32.067", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:32.579", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:33.087", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:33.612", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:34.151", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:34.666", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:35.179", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:35.688", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:36.208", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:36.748", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:37.255", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:37.767", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:38.281", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:38.787", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:39.304", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:39.815", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:40.322", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:40.834", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:41.372", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:41.940", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:42.457", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:42.974", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:43.486", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:43.994", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:44.506", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:45.017", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:45.524", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:46.033", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:46.545", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:47.058", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:47.572", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:48.079", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:48.589", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:49.102", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:49.612", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:50.121", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:50.628", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:51.139", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:46:51.651", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1934770572", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/single_open?serverTimezone=UTC, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:355) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.ConnectException: Connection refused: connect - at java.base/sun.nio.ch.Net.connect0(Native Method) - at java.base/sun.nio.ch.Net.connect(Net.java:535) - at java.base/sun.nio.ch.Net.connect(Net.java:524) - at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:574) - at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:282) - at java.base/java.net.Socket.connect(Socket.java:665) - at java.base/java.net.Socket.connect(Socket.java:603) - at java.base/java.net.Socket.(Socket.java:470) - at java.base/java.net.Socket.(Socket.java:301) - at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259) - at com.mysql.jdbc.MysqlIO.(MysqlIO.java:305) - ... 14 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 09:57:42.939", - "level": "ERROR", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": " - -*************************** -APPLICATION FAILED TO START -*************************** - -Description: - -Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. - -The injection point has the following annotations: - - @org.springframework.beans.factory.annotation.Autowired(required=true) - - -Action: - -Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. -" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:15:17.258", - "level": "ERROR", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": " - -*************************** -APPLICATION FAILED TO START -*************************** - -Description: - -Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. - -The injection point has the following annotations: - - @org.springframework.beans.factory.annotation.Autowired(required=true) - - -Action: - -Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. -" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:18:48.159", - "level": "ERROR", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": " - -*************************** -APPLICATION FAILED TO START -*************************** - -Description: - -Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. - -The injection point has the following annotations: - - @org.springframework.beans.factory.annotation.Autowired(required=true) - - -Action: - -Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. -" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:19:36.488", - "level": "ERROR", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": " - -*************************** -APPLICATION FAILED TO START -*************************** - -Description: - -Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. - -The injection point has the following annotations: - - @org.springframework.beans.factory.annotation.Autowired(required=true) - - -Action: - -Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. -" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:35:25.058", - "level": "ERROR", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": " - -*************************** -APPLICATION FAILED TO START -*************************** - -Description: - -Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. - -The injection point has the following annotations: - - @org.springframework.beans.factory.annotation.Autowired(required=true) - - -Action: - -Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. -" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:55:25.101", - "level": "ERROR", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": " - -*************************** -APPLICATION FAILED TO START -*************************** - -Description: - -Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. - -The injection point has the following annotations: - - @org.springframework.beans.factory.annotation.Autowired(required=true) - - -Action: - -Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. -" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 10:57:08.929", - "level": "ERROR", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": " - -*************************** -APPLICATION FAILED TO START -*************************** - -Description: - -Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. - -The injection point has the following annotations: - - @org.springframework.beans.factory.annotation.Autowired(required=true) - - -Action: - -Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. -" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 11:17:18.002", - "level": "ERROR", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": " - -*************************** -APPLICATION FAILED TO START -*************************** - -Description: - -Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. - -The injection point has the following annotations: - - @org.springframework.beans.factory.annotation.Autowired(required=true) - - -Action: - -Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. -" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:11:16.987", - "level": "ERROR", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": " - -*************************** -APPLICATION FAILED TO START -*************************** - -Description: - -Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. - -The injection point has the following annotations: - - @org.springframework.beans.factory.annotation.Autowired(required=true) - - -Action: - -Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. -" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 12:20:31.937", - "level": "ERROR", - "thread": "main", - "class": "o.s.b.d.LoggingFailureAnalysisReporter", - "message": " - -*************************** -APPLICATION FAILED TO START -*************************** - -Description: - -Field crmebUtil in com.zbkj.service.service.impl.StoreOrderServiceImpl required a bean of type 'com.zbkj.common.utils.CrmebUtil' that could not be found. - -The injection point has the following annotations: - - @org.springframework.beans.factory.annotation.Autowired(required=true) - - -Action: - -Consider defining a bean of type 'com.zbkj.common.utils.CrmebUtil' in your configuration. -" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:12:23.855", - "level": "ERROR", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Application run failed" } - -org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) -Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - ... 19 common frames omitted -Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) - at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) - ... 31 common frames omitted -Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_TRIGGERS' doesn't exist - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) - at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) - at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) - at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) - at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) - ... 39 common frames omitted -Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_TRIGGERS' doesn't exist - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) - at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) - at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) - at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) - at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) - at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) - at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1761) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) - ... 46 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:15:51.014", - "level": "ERROR", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Application run failed" } - -org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) -Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - ... 19 common frames omitted -Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) - at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) - ... 31 common frames omitted -Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_TRIGGERS' doesn't exist - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) - at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) - at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) - at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) - at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) - ... 39 common frames omitted -Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_TRIGGERS' doesn't exist - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) - at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) - at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) - at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) - at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) - at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) - at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1761) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) - ... 46 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:22:39.924", - "level": "ERROR", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Application run failed" } - -org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) -Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - ... 19 common frames omitted -Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) - at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) - ... 31 common frames omitted -Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) - at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) - at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) - at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) - at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) - ... 39 common frames omitted -Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) - at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) - at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) - at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) - at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) - at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) - at org.quartz.impl.jdbcjobstore.CronTriggerPersistenceDelegate.loadExtendedTriggerProperties(CronTriggerPersistenceDelegate.java:93) - at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1819) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) - ... 46 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:30:03.390", - "level": "ERROR", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Application run failed" } - -org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) -Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - ... 19 common frames omitted -Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) - at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) - ... 31 common frames omitted -Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) - at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) - at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) - at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) - at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) - ... 39 common frames omitted -Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) - at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) - at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) - at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) - at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) - at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) - at org.quartz.impl.jdbcjobstore.CronTriggerPersistenceDelegate.loadExtendedTriggerProperties(CronTriggerPersistenceDelegate.java:93) - at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1819) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) - ... 46 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:44:20.884", - "level": "ERROR", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Application run failed" } - -org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) -Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - ... 19 common frames omitted -Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) - at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) - ... 31 common frames omitted -Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) - at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) - at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) - at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) - at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) - ... 39 common frames omitted -Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) - at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) - at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) - at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) - at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) - at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) - at org.quartz.impl.jdbcjobstore.CronTriggerPersistenceDelegate.loadExtendedTriggerProperties(CronTriggerPersistenceDelegate.java:93) - at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1819) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) - ... 46 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 14:54:54.161", - "level": "ERROR", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Application run failed" } - -org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) -Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - ... 19 common frames omitted -Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) - at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) - ... 31 common frames omitted -Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) - at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) - at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) - at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) - at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) - ... 39 common frames omitted -Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) - at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) - at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) - at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) - at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) - at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) - at org.quartz.impl.jdbcjobstore.CronTriggerPersistenceDelegate.loadExtendedTriggerProperties(CronTriggerPersistenceDelegate.java:93) - at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1819) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) - ... 46 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:04:49.366", - "level": "ERROR", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Application run failed" } - -org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 创建定时任务失败 - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) -Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 创建定时任务失败 - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - ... 19 common frames omitted -Caused by: java.lang.RuntimeException: 创建定时任务失败 - at com.zbkj.admin.quartz.ScheduleManager.createScheduleJob(ScheduleManager.java:73) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:54) - at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) - ... 31 common frames omitted -Caused by: org.quartz.impl.jdbcjobstore.LockException: Failure obtaining db row lock: Table 'crmeb.QRTZ_LOCKS' doesn't exist - at org.quartz.impl.jdbcjobstore.StdRowLockSemaphore.executeSQL(StdRowLockSemaphore.java:184) - at org.quartz.impl.jdbcjobstore.DBSemaphore.obtainLock(DBSemaphore.java:113) - at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:238) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.storeJobAndTrigger(JobStoreSupport.java:1063) - at org.quartz.core.QuartzScheduler.scheduleJob(QuartzScheduler.java:855) - at org.quartz.impl.StdScheduler.scheduleJob(StdScheduler.java:249) - at com.zbkj.admin.quartz.ScheduleManager.createScheduleJob(ScheduleManager.java:66) - ... 39 common frames omitted -Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_LOCKS' doesn't exist - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) - at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) - at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) - at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) - at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) - at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) - at org.quartz.impl.jdbcjobstore.StdRowLockSemaphore.executeSQL(StdRowLockSemaphore.java:123) - ... 45 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:12:16.062", - "level": "ERROR", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Application run failed" } - -org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) -Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - ... 19 common frames omitted -Caused by: java.lang.RuntimeException: 获取定时任务CronTrigger出现异常 - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:43) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.lambda$0(ScheduleJobServiceImpl.java:51) - at java.base/java.util.ArrayList.forEach(ArrayList.java:1604) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) - ... 31 common frames omitted -Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1538) - at org.quartz.impl.jdbcjobstore.JobStoreSupport$12.execute(JobStoreSupport.java:1527) - at org.quartz.impl.jdbcjobstore.JobStoreCMT.executeInLock(JobStoreCMT.java:245) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeWithoutLock(JobStoreSupport.java:3800) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524) - at org.quartz.core.QuartzScheduler.getTrigger(QuartzScheduler.java:1505) - at org.quartz.impl.StdScheduler.getTrigger(StdScheduler.java:508) - at com.zbkj.admin.quartz.ScheduleManager.getCronTrigger(ScheduleManager.java:41) - ... 39 common frames omitted -Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.QRTZ_CRON_TRIGGERS' doesn't exist - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) - at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) - at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) - at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) - at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322) - at com.alibaba.druid.pool.DruidPooledPreparedStatement.executeQuery(DruidPooledPreparedStatement.java:227) - at org.quartz.impl.jdbcjobstore.CronTriggerPersistenceDelegate.loadExtendedTriggerProperties(CronTriggerPersistenceDelegate.java:93) - at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1819) - at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1536) - ... 46 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:50.470", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:50.503", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:51.035", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:51.572", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:52.117", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:52.646", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:53.174", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:53.702", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:54.222", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:54.741", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:55.268", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:55.787", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:56.308", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:56.834", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:57.360", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:57.880", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:58.396", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:58.917", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:59.446", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:24:59.975", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:00.498", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:01.016", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:01.542", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:02.062", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:02.581", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:03.099", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:03.632", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:04.152", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:04.672", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:05.195", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:05.737", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:06.352", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:06.908", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:07.510", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:08.039", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:08.559", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:09.080", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:09.610", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:10.169", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:10.728", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:11.278", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:11.799", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:12.326", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:12.846", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:13.366", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:13.887", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:14.412", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:14.934", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:15.477", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:16.003", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:16.529", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:17.053", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:17.584", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:18.102", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:18.634", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:19.164", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:19.688", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:20.210", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:20.739", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:21.260", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:21.786", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:22.307", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:22.838", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:23.431", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:23.978", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:24.512", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:25.039", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:25.585", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:26.105", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:26.634", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:27.157", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:27.699", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:28.248", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:28.809", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:29.333", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:29.866", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:30.393", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:30.941", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:31.482", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:32.004", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:32.524", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:33.051", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:33.587", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:34.111", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:34.640", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:35.165", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:35.704", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:36.231", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:36.753", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:37.281", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:37.807", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:38.329", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:38.848", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:39.375", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:39.905", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:40.433", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:40.960", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:41.495", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:42.016", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:42.538", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:43.066", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:43.600", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:44.122", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:44.647", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:45.173", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:45.720", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:46.261", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:46.786", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:47.317", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:47.837", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:48.366", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:48.889", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:49.412", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:49.939", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:50.471", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:50.992", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:51.536", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:52.063", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:52.585", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:53.114", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:53.645", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:54.174", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:54.696", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:55.224", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:55.791", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:56.314", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:56.841", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:57.373", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:57.894", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1657509754", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 1049, state 42000" } - -com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'crmeb' - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:925) - at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1704) - at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1250) - at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2483) - at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516) - at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301) - at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834) - at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47) - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416) - at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1643) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1709) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:25:59.670", - "level": "ERROR", - "thread": "main", - "class": "o.springframework.boot.SpringApplication", - "message": "Application run failed" } - -org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'scheduleJobController': Unsatisfied dependency expressed through field 'scheduleJobService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is org.springframework.jdbc.BadSqlGrammarException: -### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist -### The error may exist in com/zbkj/admin/dao/ScheduleJobDao.java (best guess) -### The error may involve defaultParameterMap -### The error occurred while setting parameters -### SQL: SELECT job_id,bean_name,method_name,params,cron_expression,status,remark,is_delte,create_time FROM eb_schedule_job WHERE (is_delte = ?) ORDER BY job_id DESC -### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist -; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) - at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) - at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) - at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) - at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) - at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) - at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) - at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) - at com.zbkj.admin.CrmebAdminApplication.main(CrmebAdminApplication.java:51) -Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scheduleJobServiceImpl': Invocation of init method failed; nested exception is org.springframework.jdbc.BadSqlGrammarException: -### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist -### The error may exist in com/zbkj/admin/dao/ScheduleJobDao.java (best guess) -### The error may involve defaultParameterMap -### The error occurred while setting parameters -### SQL: SELECT job_id,bean_name,method_name,params,cron_expression,status,remark,is_delte,create_time FROM eb_schedule_job WHERE (is_delte = ?) ORDER BY job_id DESC -### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist -; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) - at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) - at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) - at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) - at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) - at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) - at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1290) - at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1210) - at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) - ... 19 common frames omitted -Caused by: org.springframework.jdbc.BadSqlGrammarException: -### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist -### The error may exist in com/zbkj/admin/dao/ScheduleJobDao.java (best guess) -### The error may involve defaultParameterMap -### The error occurred while setting parameters -### SQL: SELECT job_id,bean_name,method_name,params,cron_expression,status,remark,is_delte,create_time FROM eb_schedule_job WHERE (is_delte = ?) ORDER BY job_id DESC -### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist -; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist - at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:235) - at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72) - at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:88) - at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:440) - at jdk.proxy2/jdk.proxy2.$Proxy143.selectList(Unknown Source) - at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:223) - at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.executeForMany(MybatisMapperMethod.java:177) - at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.execute(MybatisMapperMethod.java:78) - at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:96) - at jdk.proxy2/jdk.proxy2.$Proxy279.selectList(Unknown Source) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.getAll(ScheduleJobServiceImpl.java:73) - at com.zbkj.admin.service.impl.ScheduleJobServiceImpl.init(ScheduleJobServiceImpl.java:50) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) - at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) - ... 31 common frames omitted -Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'crmeb.eb_schedule_job' doesn't exist - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.Util.getInstance(Util.java:386) - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4120) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4052) - at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) - at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664) - at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) - at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) - at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1379) - at com.alibaba.druid.pool.DruidPooledPreparedStatement.execute(DruidPooledPreparedStatement.java:497) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:59) - at jdk.proxy3/jdk.proxy3.$Proxy285.execute(Unknown Source) - at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:64) - at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79) - at com.baomidou.mybatisplus.core.executor.MybatisSimpleExecutor.doQuery(MybatisSimpleExecutor.java:67) - at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) - at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) - at com.baomidou.mybatisplus.core.executor.MybatisCachingExecutor.query(MybatisCachingExecutor.java:163) - at com.baomidou.mybatisplus.core.executor.MybatisCachingExecutor.query(MybatisCachingExecutor.java:90) - at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147) - at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:426) - ... 44 common frames omitted -{ - "app": "Crmeb", - "timestamp":"2025-08-19 15:28:57.217", - "level": "ERROR", - "thread": "task-executor-14", - "class": "c.z.s.service.impl.OrderTaskServiceImpl", - "message": "订单自动完成：订单记录最后一条不是收货状态，orderId = 35" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 16:00:00.361", - "level": "ERROR", - "thread": "task-executor-15", - "class": "c.z.s.service.impl.OrderTaskServiceImpl", - "message": "订单自动完成：订单记录最后一条不是收货状态，orderId = 35" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 17:00:01.576", - "level": "ERROR", - "thread": "task-executor-7", - "class": "c.z.s.service.impl.OrderTaskServiceImpl", - "message": "订单自动完成：订单记录最后一条不是收货状态，orderId = 35" } - -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:01:58.893", - "level": "ERROR", - "thread": "http-nio-20500-exec-25", - "class": "c.z.s.exception.GlobalExceptionHandler", - "message": "捕获到异常：" } - -com.zbkj.common.exception.CrmebException: 账号或密码不正确 - at com.zbkj.admin.service.impl.AdminLoginServiceImpl.login(AdminLoginServiceImpl.java:120) - at com.zbkj.admin.controller.AdminLoginController.SystemAdminLogin(AdminLoginController.java:50) - at com.zbkj.admin.controller.AdminLoginController$$FastClassBySpringCGLIB$$fa9c6d8f.invoke() - at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) - at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:687) - at com.zbkj.admin.controller.AdminLoginController$$EnhancerBySpringCGLIB$$f41a5e1a.SystemAdminLogin() - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) - at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) - at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) - at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) - at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) - at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) - at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) - at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) - at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) - at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) - at javax.servlet.http.HttpServlet.service(HttpServlet.java:665) - at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) - at javax.servlet.http.HttpServlet.service(HttpServlet.java:750) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at com.zbkj.admin.filter.ResponseFilter.doFilter(ResponseFilter.java:49) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) - at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) - at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at com.zbkj.admin.filter.JwtAuthenticationTokenFilter.doFilterInternal(JwtAuthenticationTokenFilter.java:37) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) - at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) - at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) - at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) - at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:109) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) - at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) - at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) - at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) - at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) - at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) - at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) - at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) - at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) - at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) - at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594) - at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) - at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095) - at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619) - at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) - at java.base/java.lang.Thread.run(Thread.java:1447) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:02:31.263", - "level": "ERROR", - "thread": "http-nio-20500-exec-30", - "class": "c.z.s.exception.GlobalExceptionHandler", - "message": "捕获到异常：" } - -com.zbkj.common.exception.CrmebException: 账号或密码不正确 - at com.zbkj.admin.service.impl.AdminLoginServiceImpl.login(AdminLoginServiceImpl.java:120) - at com.zbkj.admin.controller.AdminLoginController.SystemAdminLogin(AdminLoginController.java:50) - at com.zbkj.admin.controller.AdminLoginController$$FastClassBySpringCGLIB$$fa9c6d8f.invoke() - at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) - at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:687) - at com.zbkj.admin.controller.AdminLoginController$$EnhancerBySpringCGLIB$$f41a5e1a.SystemAdminLogin() - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) - at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) - at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) - at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) - at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) - at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) - at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) - at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) - at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) - at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) - at javax.servlet.http.HttpServlet.service(HttpServlet.java:665) - at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) - at javax.servlet.http.HttpServlet.service(HttpServlet.java:750) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at com.zbkj.admin.filter.ResponseFilter.doFilter(ResponseFilter.java:49) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) - at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) - at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at com.zbkj.admin.filter.JwtAuthenticationTokenFilter.doFilterInternal(JwtAuthenticationTokenFilter.java:37) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) - at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) - at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) - at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) - at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:109) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) - at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) - at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) - at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) - at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) - at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) - at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) - at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) - at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) - at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) - at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594) - at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) - at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095) - at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619) - at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) - at java.base/java.lang.Thread.run(Thread.java:1447) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:44.389", - "level": "ERROR", - "thread": "http-nio-20500-exec-29", - "class": "c.z.s.exception.GlobalExceptionHandler", - "message": "捕获到异常：" } - -org.springframework.security.access.AccessDeniedException: 不允许访问 - at org.springframework.security.access.vote.AffirmativeBased.decide(AffirmativeBased.java:84) - at org.springframework.security.access.intercept.AbstractSecurityInterceptor.beforeInvocation(AbstractSecurityInterceptor.java:233) - at org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:65) - at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) - at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) - at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691) - at com.zbkj.admin.controller.UserStatisticsController$$EnhancerBySpringCGLIB$$62eefbf6.getOverview() - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) - at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) - at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) - at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) - at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) - at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) - at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) - at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) - at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) - at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) - at javax.servlet.http.HttpServlet.service(HttpServlet.java:645) - at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) - at javax.servlet.http.HttpServlet.service(HttpServlet.java:750) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at com.zbkj.admin.filter.ResponseFilter.doFilter(ResponseFilter.java:49) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) - at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) - at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at com.zbkj.admin.filter.JwtAuthenticationTokenFilter.doFilterInternal(JwtAuthenticationTokenFilter.java:37) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) - at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) - at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) - at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) - at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:109) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) - at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) - at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) - at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) - at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) - at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) - at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) - at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) - at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) - at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) - at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594) - at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) - at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095) - at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619) - at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) - at java.base/java.lang.Thread.run(Thread.java:1447) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:44.636", - "level": "ERROR", - "thread": "http-nio-20500-exec-1", - "class": "c.z.s.exception.GlobalExceptionHandler", - "message": "捕获到异常：" } - -org.springframework.security.access.AccessDeniedException: 不允许访问 - at org.springframework.security.access.vote.AffirmativeBased.decide(AffirmativeBased.java:84) - at org.springframework.security.access.intercept.AbstractSecurityInterceptor.beforeInvocation(AbstractSecurityInterceptor.java:233) - at org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:65) - at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) - at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) - at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691) - at com.zbkj.admin.controller.UserStatisticsController$$EnhancerBySpringCGLIB$$62eefbf6.getChannelData() - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) - at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) - at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) - at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) - at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) - at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) - at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) - at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) - at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) - at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) - at javax.servlet.http.HttpServlet.service(HttpServlet.java:645) - at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) - at javax.servlet.http.HttpServlet.service(HttpServlet.java:750) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at com.zbkj.admin.filter.ResponseFilter.doFilter(ResponseFilter.java:49) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) - at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) - at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at com.zbkj.admin.filter.JwtAuthenticationTokenFilter.doFilterInternal(JwtAuthenticationTokenFilter.java:37) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) - at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) - at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) - at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) - at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) - at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:109) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) - at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) - at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) - at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) - at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) - at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) - at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) - at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) - at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) - at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) - at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) - at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) - at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) - at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594) - at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) - at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1095) - at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:619) - at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) - at java.base/java.lang.Thread.run(Thread.java:1447) -{ - "app": "Crmeb", - "timestamp":"2025-08-19 18:03:46.845", - "level": "ERROR", - "thread": "Druid-ConnectionPool-Create-1416013849", - "class": "com.alibaba.druid.pool.DruidDataSource", - "message": "create connection SQLException, url: jdbc:mysql://192.168.33.10:3306/crmeb?characterEncoding=utf-8&useSSL=false&serverTimeZone=GMT+8, errorCode 0, state 08S01" } - -com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - -The last packet successfully received from the server was 1,011 milliseconds ago. The last packet sent successfully to the server was 1,011 milliseconds ago. - at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) - at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) - at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) - at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) - at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) - at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3603) - at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3492) - at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4043) - at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503) - at com.mysql.jdbc.ConnectionImpl.pingInternal(ConnectionImpl.java:4356) - at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) - at java.base/java.lang.reflect.Method.invoke(Method.java:565) - at com.alibaba.druid.pool.vendor.MySqlValidConnectionChecker.isValidConnection(MySqlValidConnectionChecker.java:107) - at com.alibaba.druid.pool.DruidAbstractDataSource.validateConnection(DruidAbstractDataSource.java:1386) - at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1719) - at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2715) -Caused by: java.net.SocketTimeoutException: Read timed out - at java.base/sun.nio.ch.NioSocketImpl.timedRead(NioSocketImpl.java:277) - at java.base/sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:303) - at java.base/sun.nio.ch.NioSocketImpl.read(NioSocketImpl.java:345) - at java.base/sun.nio.ch.NioSocketImpl$1.read(NioSocketImpl.java:790) - at java.base/java.net.Socket$SocketInputStream.implRead(Socket.java:983) - at java.base/java.net.Socket$SocketInputStream.read(Socket.java:970) - at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:114) - at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:161) - at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:189) - at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3049) - at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3503) - ... 10 common frames omitted diff --git a/crmeb_admin_log/log_info.log b/crmeb_admin_log/log_info.log deleted file mode 100644 index e69de29b..00000000 diff --git a/crmeb_admin_log/log_warn.log b/crmeb_admin_log/log_warn.log deleted file mode 100644 index e69de29b..00000000